Rise of the Guardian "Easter Egg"?

[frogsandsongs]

What's that? You saw an advertizement for time travel in that new movie? Well, it's good to know that Mr. Joyce and the other creators might still be thinking of us. It seems like there a lot of those Jack Frosts running around. Let's just hope Wilbur never runs into them. I can only imagine the kind of trouble the two of them might get into together.

Three lifetimes worth of groundings, probably.

Oh, and I'd be careful calling it an "Easter Egg", what with the Easter Bunny being involved.