On TV: Rob Thomas, Mariah Carey, Jennifer Lopez

Pop acts on television this week include matchbox twenty frontman Rob Thomas, who visits ‘The Ellen DeGeneres Show’ on Monday; Howie Day, who visits ‘The Tonight Show with Jay Leno’ on Wednesday; Puffy AmiYumi, who perform on ‘Jimmy Kimmel Live’ on Thursday; Backstreet Boys, who visit ‘Total Request Live’ on Thursday; Mariah Carey, who visits ‘The View’ on Friday; Jennifer Lopez, who visits ‘The Tonight Show with Jay Leno’ on Friday; and Martha Wainwright, who performs on ‘Last Call with Carson Daly’ on Friday.