Personally, I'll think I'll wait until the all-singing, all-dancing version gets released, like Pixar did with "A Bug's Life: Collector's Edition".
Whilst "Monster's Inc." was good, I don't think it has the same novelty or replay value as "A Bug's Life" or "Toy Story II" for that matter, which is a shame.
Can't wait to see the real-life outtakes of the young girl who plays Boo though. She was a very funny character!