Build for today.  A divine caster gish monster that can serial crush with implosion.  I love this build because of how clean it is.  You don't really lose anything compared to a base cleric but you gain a ton.  Even the epic feats and epic bonus feats line up perfectly.  It seems like these 3 classes were meant to be combined in exactly this fashion.

What this build gives you: full cleric casting with no loss of caster levels and extremely good SR penetration; cleric buffing and healing; 17 pre-epic BAB for 4 attacks/round; 35/40 undead turning; devastating critical at level 21; extremely high save DCs for their spells, particularly evocation (implosion will end up with DCs in the 50s with WIS-boosting gear); heavy armor and tower shields; and uncanny dodge.

Weak points: only constructs with magic immunity will give this build trouble - it can devcrit or implode anything else; AC on this build is decent due to heavy armor use, tower shields, armor skin and racial natural armor bonus but is not godly; saves don't really get any notable boosts - be sure to mitigate this shortcoming with the best save-boosting equipment you can find.

Build Name: Serial Crusher Theory

Race: Half-Ogre

STR 21   
DEX 6         
CON 12         
WIS 18         
INT 10         
CHA 6         
                        
Lvl   Class
1   Cleric 1: Spell Focus (Evocation), Domain: Weapon Focus (Scimitar), Domain: Uncanny Dodge, Domains: War, Fate, Turn Undead, Heal 4, Ride 2   
2   Clr 2: Heal 5 - begin taking Lore at every subsequent level to at least Lore 15
3   Clr 3: Greater Spell Focus (Evocation), Ride 3      
4   Clr 4: 22 STR
5   Clr 5: Ride 4                  
6   Clr 6: Mounted Combat      
7   Clr 7: Ride 5
8   Clr 8: 23 STR
9   Clr 9: Mounted Archery      
10   Clr 10                  
11   Clr 11               
12   Clr 12: Improved Critical (Scimitar), 24 STR
13   Hospirtaler 1: Lay on Hands   
14   Hosp 2                  
15   Hosp 3: Holy Warrior, Bonus: Power Attack, Remove Disease, Turn Undead (Stacking)   
16   Hosp 4: 19 WIS
17   Hosp 5: B: Cleave, Lore 15
18   Hosp 6: Extend Spell      
19   Hosp 7: B: Great Cleave      
20   Hosp 8: 25 STR
21   Hosp 9: Overwhelming Critical (Scimitar), Bonus: Devastating Critical (Scimitar)      
22   Hierophant 1: Spell Power +2   
23   Hiero 2: Spell Power +4   
24   Hiero 3: Epic Spell Focus (Evocation), Spell Power +6, 20 WIS
25   Hiero 4: Spell Power +8   
26   Hiero 5: Spell Power +10   
27   Hosp 10: Armor Skin      
28   Hosp 11: 21 WIS
29   Hosp 12                  
30   Hosp 13: Great Wisdom x2      
31   Hosp 14                  
32   Hosp 15: 24 WIS
33   Hosp 16: Great Wisdom x2      
34   Hosp 17                  
35   Hosp 18                  
36   Hosp 19: Great Wisdom x2, 29 WIS
37   Hosp 20                  
38   Hosp 21                  
39   Hosp 22: Great Wisdom x2      
40   Hosp 23: 32 WIS

Spell Suggestions:

- Implosion: instant death to everything, even those things immune to death magic, in a medium-sized area
- Sun Burst: huge damage to undead and permanent blindness to all
- Aura Versus Alignment: protects against some nasty status effects like fear and paralyze
- Hammer of the Gods: a good mid-level battlefield control spell
- Sound Burst: good low-level battlefield control spell
- Buffs: the cleric's real strength. Some suggestions, and remember you have Extend Spell to stretch them out: Divine Favor, Righteous Might, Battletide, Prayer, Recitation, Freedom of Movement, True Seeing, Premonition (fate), Mantle of Egregious Might (war)
- Recovery Spells: Heal, Lesser Restoration, Restoration, Greater Restoration, Regeneration
- War Domain Spells: keep one copy of the highest War Domain spell you have available prepared at all times to maximize the damage bonus from Holy Warrior

Note, make sure to buy off the half-ogre level adjustment as soon as you can (level 6 and 9).  Because all the active abilities in this build are in the vanilla game, this one makes a great custom cohort.  If you are OK with a high level of cheese (and have level adjustment turned off) you could switch Lightning Reflexes for Craft Wonderous Items at level 15 and you would then qualify for the lich template and the demilich template at level 21.  You must be lawful evil or neutral evil for that though.

I noticed there aren't many places to find epic level build ideas for the updated incarnations of the PRC.  I love building epic characters in NWN and I keep my designs in a spreadsheet so I figured I would share them here for anyone else who wants ideas.  Here is my first one.  I also believe this is the best high-level NWN build I have ever played.

What this build gives you: full warlock invoking by level 25, 16 pre-epic BAB for 4 attacks/round; charisma bonus to saves and an additional charisma bonus to one save of your choice; access to shifter forms starting at mid-to-high levels for massive AC, physical stats, and immunities; the ability to infinitely heal yourself (undead shape and utterdark eltritch doom); doubled eldritch blasts (eldritch sculptor, quadrupled with haste); doubled eldritch essences (lord of all essences); damage, attack and save bonus that stacks with each kill (lolth's meat); devastating critical with either falchion or scimitar (your choice, falchion is best but is not in the vanilla game); good scaling spell resistance; and CHILLING TENTACLES!

Weak points: invocations only have a caster level of 25; invocation save DCs are not super high; slows down a bit killing constructs, undead, and other critical-immune monsters.  It may be worth working in extra invocation somewhere to get vitriolic blast to deal with spell resistance and the critical-immune stuff, but lolth's meat generally boosts the damage enough for me.  You could also replace Flee the Scene after level 11 with vitriolic blast, but I would read the notes at the end before doing that - it will essentially force you to primarily use smaller Shifter forms until level 35.

Build Name: Rake (Malazan fans will get the name)

Race: Drow

Alignment: Any evil                        
                        
STR 18         
DEX 10            
CON 10         
WIS 13         
INT 10            
CHA 15         
                           
Lvl   Class
1   Warlock 1: Power Attack, Eldritch Blast, Sickening Blast, Hide 2   
2   WL 2: Eldritch Spear      
3   WL 3: Cleave, DR 1/Cold Iron, Hide 3   
4   WL 4: Deceive Item, Dark One's Own Luck, 19 STR   
5   WL 5: Hide 4   
6   WL 6: Lolth's Meat, Eldritch Chain      
7   WL 7: DR 2/Cold Iron, Hide 5   
8   WL 8: Fiendish Resilience 1, Beshadowed Blast, 20 STR   
9   WL 9: Great Cleave         
10   WL 10: Elemental Resistance 5, Flee the Scene      
11   WL 11: DR 3/Cold Iron, Chilling Tentacles      
12   Blackguard 1: Improved Critical (Falchion/Scimitar), Use Poison, 21 STR   
13   BG 2: Smite Good, Dark Blessing      
14   WL 12: Imbue Item      
15   WL 13: Alertness, Fiendish Resilience 2, Noxious Blast      
16   WL 14: 22 STR   
17   BG 3: Turn Undead, Create Undead      
18   BG 4: Sneak Attack +1d6      
19   WL 15: DR 4/Cold Iron, Eldritch Cone      
20   WL 16: Eldritch Doom, 23 STR   
21   WL 17: Eldritch Sculptor         
22   WL 18: Fiendish Resilience 5, Utterdark Blast      
23   BG 5: Summon Fiend      
24   WL 19: Lord of all Essences, DR 4/Cold Iron, 24 STR   
25   WL 20: Elemental Reistance 10, Mask of Flesh      
26   Shifter (PnP) 1: Greater Wild Shape, Creature Weapon Proficiency      
27   Shifter 2: Overwhelming Critical (Falchion/Scimitar), Animal/Monstrous Humanoid Shape
28   Shifter 3: Large/Tiny/Beast Shape, Greater Wildshape 3/day, 25 STR
29   Shifter 4: Giant/Vermin Shape
30   Shifter 5: Devastating Critical (Falchion/Scimitar), Magical Beast Shape, Greater Wildshape 5/day
31   Shifter 6: Abberation/Ooze Shape
32   Shifter 7: Huge/Dragon Shape, Greater Wildshape 7/day, 16 CHA
33   Shifter 8: Daylight Adaptation, Undead/Construct Shape      
34   Shifter 9: Elemental/Outsider Shape, Greater Wildshape 9/day
35   Shifter 10: Evershifting Form      
36   WL 21: Epic Eldritch Blast, 17 CHA   
37   WL 22                        
38   WL 23: B: Epic Eldritch Blast, DR 5/Cold Iron, Fiendish Resilience 7
39   WL 24: Epic Eldritch Blast         
40   WL 25: 18 CHA

Some shape suggestions for Shifter if you can find them:

27: Asabi Chieftan, Dire Tiger
28: Brown Bear Companion, Bulette
29: Hill/Mountain Giant
30: Androsphinx
31: Battle Devourer
32: Old Red Dragon, Fire Giant
33: Demilich
34: Ancient Red Dragon
37: Dracolich (Best all-around form IMHO)
38: Mithral Golem
40: Prismatic Dragon, Adamantine Golem

Note, this is a great candidate for an undead template like necropolitan for the infinite utterdark eldritch doom healing mentioned above.  Make sure to buy off the drow level adjustment with XP as soon as you can (level 6 and 9).

Note on Flee the Scene: this invocation allows the warlock to teleport a short distance.  This invocation is great for convenience and kiting, but has a special use in this build.  One issue with shifter is that many of the best forms are too large to fit through doors and before Shifter 10 this means you usually have to end your Greater Wildshape whenever you encounter a door.  Flee the Scene allows you to walk up to a door and teleport through, thereby stretching out your daily uses of Greater Wildshape.  Long, narrow passages and bridges will be the only things that will make you return to your normal shape.

No, D&D always has an XP cost for crafting.

It's not supposed to be dragonblooded - it's monstrous humanoid, not dragon subtype, despite the lore. Blame WotC for that.

I saw tumble AC bonus and spellcraft save bonus were removed.  Is there a way I can re-enable these?  I don't see a switch for it.

I realize it is not reflective of PNP rules to allow them, but it was a nwn character building nuance I enjoyed.