“Is that Paul Rudd?" the actor mouthed incredulously in the background.
Obviously, Ruffalo knew who it was, and, obviously, he wasn't really starstruck. But, it was nice to see him get in the spirit of the weekend's festivities, which are entirely based on the freak-out.
You see, like Rudd, Ruffalo is also a member of Marvel's expansive universe, which makes them bros. He's also worked with some of the biggest movie stars on the planet; Leonardo DiCaprio, Robert Downey, Jr., and Tom Cruise come to mind.
Famous guys like Ruffalo don't get starstruck anymore. But, watching celebrities pretend they're just like us makes for one heck of a viral video. Check it out below.