Not sure if anyone has ever noticed or brought it up, but at 1:54 in Basshunter's DOTA video, there's a guy playing FFXI.
Basshunter is pretty well known, even if people don't know his name I'm sure everyone's heard some of his songs and DOTA is one of the most famous ones.
Pretty cool I thought.
http://www.youtube.com/watch?v=0OzWIFX8M-Y