The long-running animated series does it better than anyone. Michael Jackson helped Homer write a birthday song for Lisa; Aerosmith sampled the Flaming Moe; Homerpalooza hosted everyone from the Smashing Pumpkins to Cypress Hill; the Ramones; Johnny Cash; Green Day. You're officially a music icon if you've been rendered two-dimensional by Groening & Co.
Jessica Simpson played (what else) Kelso’s ditzy bombshell California girlfriend in an extended cameo that ran three episodes. The gig offered viewers an opportunity to watch Simpson flit around in skimpy outfits. 'Cause that so rarely happens.