Last night I watched The 36th Chamber of Shaolin with my wife, who had never seen it. It's great, although like a lot of other movies not quite as great as its reputation. I appreciate that it's a thinking man's kung fu movie, but I think it could use a little more action.
I think my (and my wife's) favorite kung fu movie is Legend of Drunken Master. I don't care how silly you think it is, you can't have much more fun watching a movie than this.