Get ready to ho-ho-hold onto your Santa hats as we reveal the hidden holiday talents of these celebs who sleighed it on the Christmas screen. From jingle bell shockers to merry revelations, stars like Dolly Parton and Tom Hanks have been dashing through the snow in unforgettable Yuletide roles. Lets jingle all the way to the North Pole of Hollywood magic as we unwrap a festive surprise...