Must Play Games for the Next Year

Saw some demos for these games in this year's Penny Arcade Expo, and I'm taking note. Here's what I'm looking forward to:

• Assassin's Creed - Xbox 360
• Far Cry 2 - PC

Here's a list of some games that are already released and might be worth checking out:

• BioShock - Xbox 360
• Guild Wars - PC