On TV: Avril Lavigne, Diana DeGarmo, John Mayer

Pop acts on telvision this week include Avril Lavigne, who performs on ‘The Tonight Show with Jay Leno’ on Monday, ‘The Late Late Show with Craig Kilborn’ on Tuesday, and ‘On Air with Ryan Seacrest’ on Thursday; ‘American Idol’ runner-up Diana DeGarmo, who performs on ‘The Early Show’ on Monday, ‘The View’ on Tuesday, and ‘On Air’ on Wednesday; Maroon 5, who perform on ‘The Tonight Show’ on Tuesday; Alanis Morissette, who performs on ‘Late Night with Conan O’Brien’ on Tuesday and ‘The View’ on Friday; JoJo, who performs on ‘Total Request Live’ on Tuesday; John Mayer, who performs on ‘The Early Show’ on Wednesday; and Marc Anthony, who performs on ‘The Tonight Show’ on Friday.