Disco was the hottest thing in the 1970s, and you can create that same burn, baby, burn vibe in your rec room for a little Saturday Night Fever fun. No disco room would be complete without the requisite spinning disco ball and, of course, plenty of space to boogie. A great sound system is a must if you're going to be cranking the Bee Gees all night long. Frame some '70s albums for the walls and dust off that old fondue set. Bell-bottoms optional.