Okay, not strictly in keeping with the theme of these videos, but it's my list so shut up.
Everyone has at least one song on Guitar Hero or Rock Band that they like to play simply to show off: that one song that you can 100% with ease. This one would be mine.
(I do vocals in case you're wondering)
This video doesn't involve me, before anyone asks, but it's surprisingly hard to find decent quality vids of this song which are also worth watching, so much kudos to the folks involved.