The soon to be hugely popular actress Kat Dennings has joined Richard Linklater's latest comedy, Liars (A-E), where she'll play the best friend of a character who travels around to all her ex-boyfriends, on Barack Obama's inauguration day, to collect belongings she left with them. The main role is yet to be cast, but Dennings may yet be the star if she's become attached at this early stage. Linklater was due to direct School of Rock 2: America Rocks, but that appears to be on the backburner for the moment.