What is a movie that "looks like" it would suck, but actually is well written and acted and a good time?

I mentioned this one on another post. It's good enough I'm gonna throw it out there again. Kung Fu Mahjongg. All 3. ....and Kung Fu Hustle

Edit to add, thier whole troop is amazing. Silly stories made amazingly entertaining, due to the charismatic cast and, creative and well executed choreography.