Ubiquitin, http://www.theyeshivaworld.com/coffeeroom/topic/halachick-dinner-what-do-you-think-about-it/page/3#post-570296, for example.
Phil, calling it “halachic” makes it sound like a mitzvah.
Newbee, I haven’t been to either, but this doesn’t sound like the same thing as mesorah dinners.