matt damon. that is -- i mean, 'cause this is hollywood. you can hit an oscar winner with a rock out here. , good. well, then, just throw the rock and see what happens. ow! oh, my g-- did you just hit me with a rock?! damon: is that reese witherspoon?! [ cheers and applause ] oh, my goodness! reese, it's matt damon. what are you doing out there? oh, hey, matt. i don't -- i was just at bevmo! w-what's going on? uh, well, do you want to be on "jimmy kimmel live"? uh, i don't know. is, like, jimmy in there? no, no. jimmy's not hosting it. i am. oh, yeah. well, yeah. of course. of course, yeah. if jimmy isn't there, i'm in! okay! [ cheers and applause ] my next guest is an oscar winner who buys her own groceries, evidently. we're very lucky to have her with us tonight. please, everybody, put your hands together for reese witherspoon. [ cheers and applause ] okay, okay, cool. any way you want. we are so happy to have you here. this is crazy. what were you doing out there? you were shopping? yeah! oh, hey, sheryl. i bet we shop for the same stuff. 'cause i have four kids. you just had your third.