Not to toot my own movie-watching horn here, but I think it's pretty awesome of me to indulge his request to watch a movie about surfing when I have about zero interest in the subject matter. Endless Summer, Step Into Liquid, Riding Giants: I've seen 'em all. On his couch. Like I give a shit about some dude surfing a wave.
Sure, I'll scan through his DVDs and suggest we watch The Big Lebowski or Back to the Future for the zillionth time, but when he pulls out Endless Summer II and insists on watching it, I'll shrug and say okay.
I'll even pretend to get a little upset when some famous surfer dies after an epic wipeout. Boohoo. Huge waves can be dangerous: I got the memo, every single surfing movie out there! Mother Nature can be a cruel bitch and surfers walk the line every time they go out into the ocean, got it.
Good luck finding a girl to tolerate a more boring genre of film. I won't roll my eyes, cross my arms and huff loudly after two hours of monotone narration spoken over repetitive footage of waves. Not me! I'll play along and marvel at the ripcurls. What girl gives a fuck about ripcurls? None! All I'm saying is that he better appreciate it because that's what I'm bringing to the girlfriend table.