[Zoltan]

Here's a complete list of favourite feat. Feel free to add your owns. All comments are welcome!

PALADIN / FIGHTER

Power Attack (for cleave)
Cleave (extra attack is always nice)
Greater Cleave (unlimited extra attacks?!Oh yeah!)
Improved Critical (the best)
Large Sword Focus (or bastard sword,axe)
Large Sword Specialization (but I like longsword better)
Great Sword Focus (I like great swords)
Great Sword Specialization (Great swords are GREAT!)
Dash (run through the enemy spell caster as fast as you can)
Maximize Weapon (Maximum Damage, Maximum Destruction!)

The Rest

Heroic Inspriation (not bad)
Fiend Slayer (sounds exciting)
Extra Smite (could be useful)
Extra Turning (could be useful but clerics got it too)
+2 Save feats (take Lightning Reflex if your DEX is low, Iron Will if your Wisdom is poor, Fortifude if your CON is low)

WIZARD

Combat casting (primary)
Subvocal casting (nice)
Spirit of Flame (burn baby, burn!)
Spell penetration (great!)
Spell penetration 2 (very great!)
Dash (run!run!)
Aegis of Rhyme (ice ice baby)
Spell Focus (specially evocation, enchantment and necromancy)

The Rest

Crossbow Focus (+1 bonus to ranged attacks)
Storm something feat (high voltage is always welcome)
Acid something feat (cool yeah)

CLERIC

I'll take combat casting, mace focus, flail prof, flail focus, crossbow focus, extra turning, lightning reflex, improved critical. I don't think about power attack and cleave for my cleric. What about yours?

FIGHTER/THIEF

Blind Fighting
Cleave
Gr. Cleave
Crip. Strike
Dash
Dirty Fighting
Imp. Critical
Imp. Evasion
Bow Focus
Bow Specialize
Max Attack
Pow Attack
Small Blade Focus (or large sword)
Small Blade Specialize (dual wielding large & short sword?)
Slippery Mind
Rapid Shot (for bows)

Ambidex, 2 weapon fighting if you want to dual-wield.

BARD

What about bard's feats? My bard is not melee fighter he's a ranged attacker, rock singer, spell-caster. What about yours?