On TV: Deborah Gibson, Imogen Heap, Alanis Morissette

Imogen Heap eyeshadow

Pop acts on television this week include Deborah Gibson, who visits ‘The Tony Danza Show’ on Monday; Imogen Heap, who performs on ‘The Late Show with David Letterman’ on Tuesday; and Alanis Morissette, who performs on ‘The Tonight Show with Jay Leno’ on Tuesday.