My favourite D&D game was my first one. I guess it was just an overwhelming experience with my imagination: Ravenloft: Strahd's domain.
LARPs...well I've only played one and it wasn't official or anything, so it didn't really have a name. It was great though, tons of people.
I've been working on a reality-travelling/time-travelling D&D campaign for over 6 years, but I haven't had time to finish with University and all. I've made some people play it and both groups really liked it.
Shoplifters of the world...Unite and take over...