There's always a rogue. Doesn't matter what setting you're really dealing with either. Medieval times? Rogues. Renaissance? Professional rogues. Great Depression? Organized crime. Modern day? Thieves. Sci-fi? Assassins. It's the one job that follows you no matter where you go.
No guys, this isn't just some rant thread about how the rogue classes needs uber l33t buffs. This is about how the class plays at its very core across all games. This is about taking advantage of a class's passive abilities and how just a few new tricks of the trade can aid social gameplay for everyone.