I can imagine Jimmy Fallon was always the crappiest guy on MTV couldn't keep a straight face to save his life. Of course working across from William I can see why but still if he's going to be a professional joker he should have learned how to get through one with out laughing.
Let's see, the Red Sox win the whole thing, and a remake of 'Fever Pitch' appears (and is unwatchable). By the same logic, if the White Sox win the whole thing, we are due for a 'Blues Brothers' remake.