They are men and they are blue they are in a group. Together they are the Blue Man Group, not to be confused with the chronically depressed support group the blue men group. They are are also awesome. Its hard to describe why the show is as good as it is. In fact it sounds cheesy they spit stuff, eat twinkes and bang on PVC pipes. Combined with the interactivity, music and the energy of the crowd it makes for one awesome show. Would I go back? Probably not unless they change the show significantly, but then again I am a cheap bastard and usually never watch anything twice. If you haven't seen the show it is a defiant must.