Hollywood’s a fickle business, and you gotta learn how to move fast if you wanna dodge the crowds — so we wanna see if you can guess who this on-the-go star is!

We ran into this actor — for all of a few seconds — on the streets of Manhattan a few years back, when he was signing a few autographs for some lucky fans … but he ended up being pulled away after putting his signature on a handful of photos.