Also not an HBO guy but I’ve had quite a few people tell me that my sarcasm & overall demeanor reminds them of Paul Rudd.
As far as a doppelgänger, back when he was more in the public eye at both ND & his brief NFL stint that coincided with my HS years & early 20’s, people would say I was a dead ringer for Brady Quinn ALL the time. I can kind of see it, as we have basically the same hair, eyes, & thicker eyebrows, but it always shocked me how many different people would point it out. To this day, at least once or twice per year, I still get “you look just like that old ND/Browns QB...what’s his name?”. This mostly occurs at games, tailgates, &/or sports bars.