On TV: The Roots, Snoop Dogg, VMAs
Rap acts on television this week include the Roots, who perform on ‘The Late Show with David Letterman’ on Tuesday; Snoop Dogg, who visits ‘Total Request Live’ on Thursday and presents at the MTV Video Music Awards later; and other VMA appearances by presenters 50 Cent, Kanye West, Diddy, LL Cool J, Missy Elliott, Busta Rhymes, Lil Jon, and performances by T.I. and Ludacris with Pharrell Williams.