The new British movie Frequently Asked Questions About Time Travel bills itself as "Doctor Who meets Shaun Of The Dead." But this trailer makes it look more like Primer meets The Goodies.
In FAQ, three buddies are drinking at the pub when they meet Anna Faris (The House Bunny) who's traveled back in time from the future. At first they think she's joking, until one of them stumbles through a crack in time into the pub's future, in which they're all dead. Then they're stuck trying to unravel all of the mysteries of time travel, including "Whose round is it?" [Filmstalker]