As it happens, I tried watching Kung Fu Hustle a couple weeks ago, partly from the recommendations in this thread and partly because I'd come across it before and was interested.

Unfortunately it's not for me. I could only force myself to watch about half an hour, but in that time it couldn't seem to decide whether it was a brutal crime story, a strange crime musical, a satire of a Chinese slum community, or a live-action Looney Tunes episode. I just didn't find it funny, and couldn't find a character whose story I cared about.

This makes me wonder about Journey to the West, a rather oddball movie I've also come across and thought about watching. After the disappointment of Kung Fu Hustle, I'm wary of items in a similar vein.