These have been going around the office for months. The best one is, as Chojin pointed out, the 'I Know My Caffeine' strip because of the uber creepy 'Eyes Without a Face' video following it.
http://www.youtube.com/watch?v=dZ2q9NmYf6g
The most recent one is pretty funny as well. The music video portion consists of The Jurassic Park Theme and snippets from various Garfield:The Movie reviews.