They did this in college hockey at Lambeau Field in WI a few years back. The Badgers played Ohio State. It was a ton of fun, however being at the game was more of a novelty than anything. Of course tailgaiting and tons of extra curricular activities were good, but a football field is not made well for the viewing of a hockey rink. With that being said, I would probably go again. I have a soft spot for hockey outdoors, since that is my main winter activity.
http://sports.espn.go.com/ncaa/news/story?id=2327427