On TV: Lily Allen, KT Tunstall, Justin Timberlake

Pop acts on television this week include Paula Abdul, who visits ‘Live with Regis and Kelly’ on Monday and ‘The Ellen DeGeneres Show’ on Tuesday; Lily Allen, who gets a video sneak peak on ‘Total Request Live’ on Tuesday; Nelly Furtado, who appears as Ava Grant, a shoplifter who is suspected of murder on ‘CSI New York’ on Wednesday; K.T. Tunstall, who performs on ‘The Ellen DeGeneres Show’ on Wednesday; Joshua Radin, who performs on ‘Last Call with Carson Daly’ on Wednesday; and former *NSYNC star Justin Timberlake, auditions hopefuls who want to perform with him at Grammy’s on ‘The Early Show’ on Wednesday. Also, ‘American Idol’ premieres this week on Tuesday and Wednesday.