Red Hot Chili Peppers

This funky rock band has gone through some tough times since forming in 1983, including the brief firing of lead singer Anthony Kiedis and rampant drug abuse, which claimed the life of former guitarist Hillel Slovak. But despite the fast times, the band seems to have matured as its members begin to enter their 50s.

In their favor: In October, bassist Flea told CNN he foresees a long future with the Peppers. "I love being in the Chili Peppers, and it's my home," he said.
Biggest threat: Relapse, or running out of guitarists.
Rating: 41