Several pop acts are on television this week. On Monday, Ryan Seacrest is joined by the last American Idol castaway Josh Gracin on TRL. Also on Monday, Josh will be on Live with Regis and Kelly, while Kelly Clarkson will be on the Caroline Rhea Show. Wrapping up Monday will be Robbie Williams, who performs on the Tonight Show with Jay Leno — or actually Katie Couric. Tuesday, look for Josh Gracin again on the Wayne Brady Show, while Robbie Williams performs again on the Late Late Show with Craig Kilborn. On Wednesday, the remaining three American Idol finalists will be on the Wayne Brady Show, while Avril Lavigne performs on the Late Show with David Letterman. Thursday, look for *NSYNC star Lance Bass on the Wayne Brady Show.