On TV: Sheryl Crow, Katharine McPhee, Daniel Powter

Pop acts on television this week include Sheryl Crow, who performs on ‘Live with Regis and Kelly’ on Monday; Peter Bjorn & John, who perform on ‘Late Night with Conan O’Brien’ on Monday; ‘American Idol’ season five runner-up Katharine McPhee, who performs on ‘The Tonight Show with Jay Leno’ on Monday, ‘Today’ on Wednesday and ‘Live with Regis and Kelly’ on Thursday; Paolo Nutini, who performs on ‘Today’ and ‘Late Night’ on Tuesday; Daniel Powter, who performs on ‘The Tonight Show’ on Wednesday; Christina Aguilera, who performs on ‘The Tonight Show’ on Thursday; Jennifer Lopez, who visits ‘The Ellen DeGeneres Show’ on Friday; and Lily Allen who performs on ‘Saturday Night Live’ on Saturday.