Here is a bunch of fantastic top ten lists by Lifehacker. Love their stuff. Here are a few of my favs.
1. 10 things you forgot your mac can do
2. Top 10 YouTube Hacks
3. Top 10 BitTorrent Hacks
4. Top 10 harmless geek pranks
Check out all of them here Lifehacker’s Most Popular Top 10’s of 2008