Barbarian: Logen Ninefingers from The First Law

Bard: Kvothe from The Name of the Wind

I'd also argue Gandalf is a bard, since he casts some (but not too much) magic, handles himself well in a physical fight, likes to tell stories, and has a lot of obscure knowledge about the world.

Cleric: Thoros from A Song of Fire and Ice

Druid: Injun Joe from Dresden Files

Gunslinger: Vash the Stampede

Paladin: Michael Carpenter, Knight of the Cross from Dresden Files

Sorcerer: Harry Dresden

Wizard: The various wizards from Harry Potter