MDamon062408_01_X17.jpgMatt Damon MDamonshirt0624_03_X17.jpg When it comes to film roles, Matt Damon certainly is serious about making himself look silly!

We caught Matt back on the set of The Informant yesterday afternoon shooting a swimsuit scene. Unfortunately, Matt's been packing on the pounds for his part, resulting in, well, these pix. Hey, maybe once the film wraps, he can donate his extra gut to his old pal Ben Affleck!