Before Friends made them all zillionaires, the six cast members on that show each started off their careers by making guest appearances on a ton of famous (and some infamous) television shows. In fact, watch any television episode produced at all in the late eighties/early nineties and there’s a pretty good chance a Friends cast member will make an appearance somewhere. Anyway, in 1991, David Schwimmer had a recurring role on a couple of episodes of The Wonder Years as Karen’s boyfriend and quite frankly, I don’t know how they were able to get through of any of his scenes without birds trying to nest in that giant hair of his.