Grand Theft Auto IV hasn't left my Xbox 360 since it came out, and so I've learned about some of the achievements (warning: link contains game spoilers) that are available there. (Not me playing it, I should point out.) During a meeting today, the idea was floated for having game-style achievements in Office.

Thanks to the joy of Twitter, I've been sharing my ideas for such achievements in my twitter stream. Here are some ideas for unlocking achievements in our apps:

• create an invite in Entourage has has more than 10 invitees
• create a PowerPoint slide deck with more than 100 slides
• complete all of your Entourage tasks that are due today
• hit the limit of Excel's big grid (that's more than a million rows!)
• use Word's track changes to make more than 100 edits
• create 20 formulas using Excel's formula builder
• have an hour-long video chat in Messenger

Okay, so the Office achievements probably aren't as exciting as some of the GTA4 ones. Got any ideas of your own? Share 'em in the comments ...