My current man-cave is still a work in progress. I have a 40-inch lcd flatscreen with a home theater sound system connected to a dvd player, Atari 2600, nes, snes, N64, PS2, XBOX360, Wii, PS3. For comfort I have a couch and two Po'Ang chairs (I might have misspelled that, they are from Ikea).
The only reason why I consider my cave to be a WIP is because I live in a condo. Growing up, my room was in a repurposed basement. I hope to someday own a home with a basement so that I can turn it into my game room. I plan on building a bar and wine cellar to complete the space.