I went to GenCon again in 2006. Happy happy. Although I'm astonished when somebody asks me what GenCon is, it's possibly the biggest annual roleplaying game convention and trade show, and certainly the longest-running one. There are roleplaying games, collectible card games, board games, and video games, being demoed by vendors and played by players constantly, as well as a number of auxiliary fun events for gamer geeks.