Buzz News Roundup, 7/7

• The Wire's David Simon has told Broadcasting & Cable that he wants to make a movie about Donnie Andrews, the real-life Omar who robbed drug dealers.
• Reuters reports that Bill Clinton will be among the first guests on Elvis Costello's talk/music show.
• The Osbournes are headed to Fox for a new variety show that might be paired with American Idol next year, TV Week reports.
• According to Billboard, the Flaming Lips are showing their Christmas movie, Christmas on Mars, at the festivals they're playing up until the movie is released on DVD later this year.
• E! reports that Jamie-Lynn Sigler will join the cast of Entourage for a few episodes, playing herself.
• The Hollywood Reporter has the news that the Sundance Institute has established a submission deadline for the 2009 festival: September 8, 2008.
• Spike Lee is on board to film performances of the Broadway show Passing Strange, writes Variety.
• 90210 has added two new members to its cast, Zap2it reports — including the actress currently best known for modeling Case 24 on Deal or No Deal.