Some of my friends from Computer Science House (a terrific organization, btw) have several times annually LN₂ parties where ice cream is made. I have never handled the nitrogen myself but I also can confirm, ice cream made with Liquid Nitrogen is incredibly delicious and probably some of the smoothest ice cream I've ever eaten. Not to mention it's very fun to watch it being made.

They do have protocols for handling the stuff, there is always a master of ceremony who is well versed in the process and various modes of failure, and nobody is ever imbibing at these parties (at least not to your knowledge).

I probably shouldn't talk about the cardboard boat making competition and the second part of the competition with depth charges made with liquid nitrogen and soda bottles, but ... oops. You all didn't hear that. Now I'm going on a watch-list for sure, aren't I.