These questions were quite varied :) (Though personally I dont think Alf fits in this list, sure it might ve been an american program, but it is not typically or exclusively american like the other questions. Wouldnt call it american general knowledge).
I managed to get 4 but they were just the logical answer. Yellow (levels codes of anyhting usually are colors) solar panels (not much to put on the roof, though I think I ve heard about this) panhandles, admitedly I first tried lovehandles... And alf, that was the only one I got through "knowledge" instead of logic. (None of the other answers mean anything to me btw, not in relation with the question anyway, ofcourse I have heard of an airplane ;) etc)