Wolfgang Puck hosts brunch for Les Moonves and Nobuyuki Matsuhisa; Harry Potter wins big at Spike TV's sixth annual SCREAM Awards; Nicole Richie and other honor Justin Timberlake is for being especially green; Scott Caan and Jason Mraz are recognized for their commitment to the Life Rolls On Foundation; Usher and Bono perform while Lady Gaga has a her "first Marilyn moment" as she serenades the former president at the 10th anniversary gala of Bill Clinton's Foundation; Jennifer Aniston, Guy Ritchie and others toast Robert Downey Jr. for his impressive body of work—it was a very busy weekend of event here in L.A., get all the details in this edition of Last Night's Parties.

[Jennifer Aniston, Robert Downey Jr., Justin Theroux photo via]