Early on I was put off a bit by some of this film's juvenile humor, like the guy regularly showing his butt crack, but its exuberance, wacky humor, and cool fight scenes won me over. It's not a profound film by any means, but it's a lot of fun. I loved how a lot of the characters were older, not what you'd normally see in a kung fu movie, and cast with legends from the 1970's. It feels like it's full of comic book characters, each with their special powers and moves, but it reflects storytelling from China that goes back centuries (for example, the 14th century epic novel 'Outlaws of the Marsh'). There are also tons of other more obvious references across cultures (e.g. Wile E. Coyote and the Roadrunner, The Shining, Top Hat, and many others). The film is loaded with great effects and it's very entertaining, check it out.