The highest damage on melee characters comes from 2-handed weapon builds, usually paladins, BGs, CoTs or fighters. HOWEVER these builds are for rich boys - you need to compensate the lack of shield with good subrace + gear + skill, or you will die often. These aren't recommended for new players. Tanks with shields have less damage and they need to bring something extra to contribute to the group (if they are to be invited at all); barbarian/RDD fear aura, usual rogue duties, b-cleric with more epics and BT, etc.
If you are looking for great damage numbers on top of general usefulness, you can make a sorcerer or shifter (especially with dragon or outsider focus).
Yeah, looks like u can cs anythin non crit imm. - Big Crit