On TV: Nick Carter, JoJo, Christina Aguilera

Pop acts on television this week include openly gay identical twin duo Nemesis Rising, who visit ‘Total Request Live’ on Monday; Backstreet Boys star Nick Carter, Aaron Carter and their sisters visit ‘The Dr. Keith Ablow Show’ on Monday; JoJo, who visits ‘TRL’ on Tuesday, performs on ‘Live with Regis and Kelly’ on Wednesday, and ‘The Tonight Show with Jay Leno’ on Friday; Christina Aguilera, whose ‘Hurt’ video premieres on ‘TRL’ on Tuesday; Barry Manilow, who performs on ‘The Tonight Show’ on Tuesday; and Cheetah Girls, who perform on ‘The View’ on Thursday.