Different types of bard:-
A brooding story teller (Padeur the bard, if you've heard of him)
A highly political maneuverer (Thom Merilin?)
A romantic knight - wearing chain and receiting poems of folorn love
An acrobatic swash buckler with appropriate buffing spells
The weapons master (use 'weapon display' as your performance art) - think circus weapon acts
The Dread Pirate Roberts (he was an uber-character if ever there was - master of all trades!)
With bards you can get variety in four major ways IMO:-
Your combat style - bow, rapier, paired short swords, 2-hander. All make for a different take on the bard.
Your spell selection - focus on a school of magic, or thematic groups (eg all the stealth spells) or take a smattering of different types to maximise the flexibility of the class.
Your feats - this is true of all characters but even more so with a bard. Taking the mobility style combat feats, or ranged ones, or meta magic makes for a radically different bard. You can also take a set of feats to further boost your flexibility (such taking Run or Improved Unarmed Strike).
Your Performance Style - under 3.5 bards really need to specialise in one type of performance now. Singing, poems, story telling, playing an instrument (one of the weaker options really) will all vary the feel of your character.
I love bards
Dan