Milo Ventimiglia is incredibly sexy, especially when he's shirtless. While he's been known to bare his butt a few times for various roles, he's also isn't shy about showing off other parts of his body. Whether he's ditching his shirt for a movie role, or he's doing it for a good cause on The Ellen DeGeneres Show, we just can't seem to avert our gaze. Enjoy some of his best moments ahead!