there's a pretty cool cover of hit me baby one more time by Ahmet and dweezil zappa. Also I have an album called "punk goes pop" where various punk groups do rocked out versions of many pop erm...Classics.
here's a list:
Dynamite Boy - "I Want It That Way"
Slick Shoes - "Candy"
Yellowcard - "Everywhere"
Stretch Arm Strong - "Get This Party Started"
Rufio - "Like a Prayer"
Further Seems Forever - "Bye, Bye, Bye"
Noise Ratchet - "Crush"
Element 101 - "I'm Like a Bird"
Knockout - "Survivor"
The Starting Line - "I'm Real"
Keepsake - "The Way You Love Me"
Reach the Sky - "Sometimes"
Fake ID - "All or Nothing"
Showoff - "Borderline"
Thrice - "Send Me an Angel"
Nicotine - "... Baby One More Time"
Student Rick - "Heaven Is a Place on Earth"
my personal fave is the I'm real cover and like a prayer.