Essential.

You need this guy at every party. Look, he knows how to set shit up, not that it is all that hard but, no one else wants to do it and he likes doing it. He's socially awkward and doesn't really want to talk to anyone. He's just happy to show up and dink around and not be at home watching Liquid Sky, putting down a bag of Bugles and a case of Zima.
What? Who doesn't love obscure references and consumables from the 90's that we understandably forgot about?