Sigourney Weaver, Blythe Danner, Joe Lo Truglio

By VARIETY STAFF

Weaver

Danner

Sigourney Weaver, Blythe Danner and Joe Lo Truglio ("Reno 911") have been cast in "Paul." The film was penned by Simon Pegg and Nick Frost and will be helmed by Greg Mottola. Seth Rogen, Jason Bateman and Bill Hader have already signed on.

The film revolves around two sci-fi geeks who make a pilgrimage to the center of UFO heartland -- America's infamous Area 51 -- and in doing so run into an alien called Paul.