Monkeybone does what Fraser can't because he's too decent. Well, Monkeybone sucks ass until it bleeds purple. See, the movie relies heavily on the idea that we'll love this monkey. Problem is, the fucking monkey is not cute, not charming, and certainly not as funny a device as he could be. He's just a shrill sideshow barker spitting out lame double entendres.
Downtown looks pretty good.
It's by far the most entertaining piece of the movie. The freaks are like out of Star Wars cantina scene, and a dog's dream of cats operating on him is amusing. Of course, Downtown is watered down, so you don't see any real nightmarish images. But, while Fraser is in Downtown, struggling with Monkeybone, the movie is at its best. The movie forgets half the premises it set up and focuses on reuniting Fraser and Fonda.