Tons.
I'm claiming Factotum/Warblade, for fun with ninja-riffic moves.
* Factotum/Warblade: Font of Inspiration (1st), Font of Inspiration (human), Font of Inspiration (flaw), Font of Inspiration (flaw), Font of Inspiration (3rd). 15 points of inspiration = attack, damage, and savez goodness. Plus all the fun of being a skill monkey AND a bit of a bruiser. Int synergy helps out too. Good times. Pick up Autohypnosis and Iaijutsu Focus. Use niffy maneuvers.
Some other ideas I've been playing with:
* HULK - Fighter/Psychic Warrior: Azure Talent (1st), Psycarnum Infusion (human), Overchannel (flaw), Talented (flaw), Power Attack (Fighter 1), Improved Bull Rush (Psychic Warrior 1), EWP - Meteor Hammer (Psychic Warrior 2), Combat Reflexes (Fighter 2), Knockback (3rd). Boom! I'm LARGE! Boom! I have 30 ft. of reach! Boom! I am smacking you with Aoos! BOOM! I am smashing you into things and flinging you about! Raargh!
* Chaos Monk/Psion: Monastic Training - Psion (1st), Azure Talent (human), Psycarnum Infusion (Psion 1), Overchannel (flaw), Kung-Fu Genius (flaw), Tashalatora (3rd). A 3rd level monk who acts like a 6th level monk with a bunch of replenishing power points and Int to AC (which, along with Inertial Armor, makes you kind of hard to hit). Made of fun.
* Silverbrow Human Totemist/Scout: Expanded Soulmeld Capacity (1st), Dragonfire Strike (human), Shape Soulmeld - Fellmist Robe (flaw), Darkstalker (flaw), Improved Soulmeld Capacity (3rd). Shoot tail spikes to deal 4d6 x 3 = 12d6 damage in three firey spikes of doom. W00t. Also play the skill monkey and hidey dude.
* Incarnate/Feat Rogue: Improved Spit (1st), Expanded Soulmeld Capacity (Azurin), Point Blank Shot (flaw), Improved Spit (flaw), Precise Shot (Feat Rogue 1), (Feat Rogue 2), Deadly Spittle (3rd). Spray 4d6 acid damage in a 45 ft. cone.
* Krinth Druid/Sorcerer: Shape Soulmeld - Dissolving Spittle (1st), Expanded Soulmeld Capacity (flaw), Share Soulmeld (flaw), Shadowform Familiar (3rd). Enjoy having a 3d6 ranged touch attack (spit), that both your pets duplicate. Spray 9d6 worth of acid at your enemies every round. Please note that this is BEFORE casting any spells. Yeesh. Go into Beastmaster from Complete Adventurer later on to have more friends that can spit at your foes. Your Shadowform Familiar will be a sexy lil' guy, and be able to scout things out nicely (what with being incorporeal and such). Flavor-wise, maybe make this guy a "lord of serpents," and give him a couple of snakes (one viper as a familiar, one constrictor or viper as a companion). Otherwise, maybe go for something handy like a bat (yay for blindsense!) or some such.
Incidentally, I'm a bit curious as to why animal companions, who were already an unbalanced and really BUFF feature of the unfairly BUFF Druid, have been given MORE POWER. This confuses me to no end, and in fact makes me a bit grumpy. You're giving the companion better stats, the freedom to be customized with FEATS (?!), and FLAWS to add on MORE FEATS?!? This is a HIDEOUS power boost for a class that is already made of awesome and win, and I'm hard-pressed to see why anyone would want to have anything else as part of their gestalt (except for hating on casters and being a weirdo like me. I'm like a d20 Luddite - I refuse to play using sensible levels of magic).