For the past twenty years, Simpsons creator Matt Groening, Goosebumps author Stephen King, New York Times economist Dave Barry, and a bunch of other folk have been a part of the Rock Bottom Remainders, a dorky all-author band that mostly plays at bookseller conventions. But now, they're saying "adios amigos" to the hectic rockstar lifestyle and calling it quits. What could have prompted the retirement of these rock legends?? Did they get Yokoed? Were they tired of all the sex and drugs? Is there even still a book industry now that you can look up cat videos on the web? Well, whatever the reason, your last chance to see Matt Groening - a multi-millionaire cartoonist who's almost 60 - play a cowbell will be at the El Rey Theatre in Los Angeles on June 22.