On TV: James Blunt, Fergie, Teddy Geiger

Pop acts on television this week include James Blunt, who performs on ‘Live with Regis and Kelly’ on Monday; Fergie of the Black Eyed Peas, who performs on ‘The Tonight Show with Jay Leno’ on Monday; Gloria Estefan, who performs on ‘Good Morning America’ and ‘The View’ on Wednesday; former 98 Degrees star Nick Lachey, who performs on ‘The Late Show with David Letterman’ on Wednesday; Teddy Geiger, who performs on ‘Live with Regis and Kelly’ on Thursday; ‘American Idol’ season four drop-out Mario Vazquez, who performs on ‘The Late Late Show with Craig Ferguson’ on Friday; and former *NSYNC star Justin Timberlake, who performs on ‘Jimmy Kimmel Live’ on Friday.