It's been around for quite a while now and numerous people have done it, but lately, I've been into it more than I was before. Here's some new ones that were uploaded yesterday:
Gatchaman Theme:
http://www.youtube.com/watch?v=7PxyL1U5MR4
Born To Run by Bruce Springsteen:
http://www.youtube.com/watch?v=uqsZ0XGZCd4
Comfortably Numb by Pink Floyd:
http://www.youtube.com/watch?v=_qbPgHP2D1k
Tush by ZZ Top:
http://www.youtube.com/watch?v=nx-EEfxcX0c
Come Sail Away by Styx:
http://www.youtube.com/watch?v=CkQHehAvR08
Invisible Touch by Genesis:
http://www.youtube.com/watch?v=2VffGQBZoas
Stand Back by Stevie Nicks:
http://www.youtube.com/watch?v=9rNdat9NarI
Strange Magic by ELO:
http://www.youtube.com/watch?v=4uAR_sCFu6Y
Is This Love by Whitesnake:
http://www.youtube.com/watch?v=ZF8hBAcszOc
All Night Long (All Night) by Lionel Richie:
http://www.youtube.com/watch?v=HBf2uK1rWn4
Dancing On The Ceiling by Lionel Richie:
http://www.youtube.com/watch?v=x0zXYDRhiCU
Who Are You by The Who:
http://www.youtube.com/watch?v=-OXMJy2MPfo