Yeah it's open ended, but I think to fit the theme and this guy's preferences, it would be punk bands that did covers.
Discussion
Me First And The Gimme Gimmes
they did nothing but covers!
Punks Doing Covers
Before "Under The Bridge", Red Hot Chili Peppers was considered borderline punk, and did Stevie Wonder's "Higher Ground".
Sid Vicious of the Sex Pistols did Frank Sinatra's "My Way".
Dead Kennedy's - Theme to "Rawhide"
Fear - "We Got To Get Out Of This Place"
Circle Jerks - "Put Love A Little Love In Your Heart"
The Vandals - "In America"
The Germs - "Sugar Sugar"