Entertainment Whitney Houston's Last Movie: Sparkle August 17, 2012 / 12:04 PM EDT / CBS News US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere US Entertainment Premiere