Pop acts on television this week include the cast of ‘High School Musical 2′, who visit ‘The Early Show’ on Monday; Kat DeLuna, who visits ‘The Sauce’ on Monday and performs on ‘The Late Late Show with Craig Ferguson’ on Wednesday; John McLaughlin, who performs on ‘The Tonight Show with Jay Leno’ on Tuesday; Zac Efron, who visits ‘The Tonight Show’ on Tuesday; Avril Lavigne, who performs on ‘Last Call with Carson Daly’ on Tuesday; Sara Bareilles, who performs on ‘Today’ on Tuesday; former *NSYNC member Lance Bass, who visits ‘Live with Regis and Kelly’ on Friday; Mika, who performs on ‘Good Morning America’ on Friday; and several surprise guests, who visit ‘Total Request Live’ on Tuesday to announce the VMA nominees.