What are the top PC style/Western style rpg's(like Oblivion) in 2006/2007?

[Odaisé Gaelach]

Also, how would you classify Bioshock? I see it listed as first person shooter and/or action rpg and/or action adventure game.

Bioshock is a spiritual sequel to System Shock 2, which is one of the most famous FPS/RPG games.

If it turns out anything like System Shock 2, it would be an FPS and an RPG and an adventure game.