I make a point of staying enough in touch with pop culture to be able to have something to talk to NT's about (otherwise I wouldn't have a clue).
I am also interested in "studying" it for the reason that it helps me to understand how NT people think. (I 'm often totally mystified though - I mean what's so great about going out & getting paralytically drunk every night? And who cares what brand of jeans or trainers you are wearing?)
But I do enjoy watching soaps & other dramas on TV though - it's like they enable me to live my life vicariously, and also provide inspiration for my writing.
In a pub quiz I would probably get full marks on TV questions, some marks on pop music & celebs, but zero on sport!