On TV: Hilary Duff, Jason Mraz, Ryan Cabrera

Pop acts on television this week include Hilary Duff, who performs on ‘The Tonight Show with Jay Leno’ on Monday and ‘Today’ on Thursday, and the teen queen co-hosts ‘Total Request Live’ on Thursday as well; Ashlee Simpson, who visits ‘The Tonight Show’ on Tuesday; Jason Mraz, who performs on ‘Late Night with Conan O’Brien’ on Tuesday; Ryan Cabrera, who visits ‘Total Request Live’ on Wednesday; Missy Higgins, who performs on ‘The Late Late Show with Craig Ferguson’ on Thursday; the Click Five, who perform on ‘Late Night’ on Thursday; and Michael Buble, who performs on ‘Today’ on Friday.