I've tried to watch nfl loads of times, but it's definitely not for me.
Same as baseball, no appeal whatsoever. I'll watch ice hockey if I channel surf & it's on, but only if I'm properly bored.
Footy
Tennis
F1
Everything else just merges into 'if there's nothing better I want to watch'
I haven't included UFC or boxing cos they're not on when anything else is on, but I'll choose them over films or TV every time.