For those of us who were wondering if there would be a proper "Grease" sequel (Notice I said PROPER... "Grease 2" doesn't count) it looks like the closest we're gonna get is John Travolta and Olivia Newton-John having some fun with their Danny & Sandy characters in this video from their new Christmas CD, "This Christmas." The song is written by the same man who wrote "You're The One That I Want" and in the same spirit. It's all about charity, the single and the album.

They dropped in on Ellen to talk about it.

And about Grease:

John & Olivia also reunited about 10 years ago at a Grease DVD release party