Reese's 'Monster' Mash

"The Insider" has the latest... REESE WITHERSPOON is just one of the many stars who've signed on to lend their voices to the new Dreamworks Animation movie 'Monsters vs. Aliens,' according to Variety . Joining the Oscar winner will be KIEFER SUTHERLAND , 'Knocked Up' co-stars SETH ROGEN and PAUL RUDD , funnyman STEPHEN COLBERT , RAINN WILSON of "The Office" fame, WILL ARNETT ("Arrested Development") and "House"'s HUGH LAURIE . The animated flick tells the story of a girl who grows to 50 feet tall after being drenched in space gunk and is soon captured and held in a secret government compound -- where she discovers that she's not the only one being kept there. [link]