Death in Valhalla is a murder mystery/live game set in the milieu of Norse-Germanic mythology and Wagner's Ring Cycle.
Several other members of the Live Game Labs crew will be running events at Tri Wyrd, and there are even more events run by other LARP troupes. I know my LARPy friends are in, but if you're interested in gaming, acting, theater, costuming, or just something different... come by and give Wyrd Con a try.
Oh, and if you don't have most of a day to spare, here's how the Ring ends, as performed in Valencia, 2008. I may have to pick those DVDs up.