I saw this finally yesterday at a cheap theater... Movie was pretty good itself... Hank Azaria carried the whole thing, and they could have done without the Jonahs Brothers as the singing cupids (even before I knew it was them, I really didn't like that part).
But the Oscar cameo was EPIC for the 2 minutes it lasted. It was great to see a Muppet on the Big Screen again... the last time was Mr. Magoo's Superstore-orium or whatever it was? And even then, it was Muppets From Space before that. And with Darth Vader too... great stuff.
Also of note, Cookie Monster is also in the film, but as a picture on a computer.