Yeah I've always loved when they do wacky, silly stuff like this (and it was a nice break from the dull and neverending marriage storyline). I'm always surprised when other HIMYM fans don't seem to care for them.
And I'm also surprised at the racism charge now being leveled at the ep:
It looked to me like they were only making fun of bad kung fu movies. There were no bad asian accents or slanted eye makeup that I could see. Not sure what the issue is.