My roommate has set up a D&D campaign for us and 6 other people, so we have a party of 8. So far we've only had one session, but I'm really enjoying it. It's not my first RPG, however. Last year we played Stars Without Number (a Sci-Fi RPG) with a smaller group. It was fun, but even though our characters were alright in the end the ending wasn't so happy. We refer to it as the "Enchilada incident."