Pop star television appearances this week include Backstreet Boys star Nick Carter on The View on Monday, preceded by Vanessa Carlton on Live With Regis And Kelly. Also on Monday, Kelly Osbourne stops by MTV’s Total Request Live for a live performance. TRL will have Jennifer Lopez in the house on Tuesday, along with a telephone call from *NSYNC star Justin Timberlake who premieres his new video. Later on Tuesday, Enrique Iglesias performs on the Tonight Show with Jay Leno. Finally on Wednesday, Avril Lavigne’s new video is premiered on TRL. Check your local listings.