Yes, everybody here knows what is ordinarily and commonly meant by the term “arts”. Which part of the OP’s explicit statement “feel free to interpret ‘artform’ as widely as you like” did you not understand?
The part where it requires a tedious semantic squabble about what art is.
Neither the OP nor the posters who selected some type of sports game as their answer to the OP’s question have required any tedious semantic squabble about what art is.
It’s the posters like you pedantically insisting that “sports aren’t arts” who started, and are perpetuating, that squabble.
I haven’t inisted on a damn thing.
But if you think I’m going to get into an argument about an argument about what art is, well, you’re wrong.
If it ain’t a science…
Yeah, put me down for this too. Mind you, my musical tastes did resurrect zombie-like in the nineties, with the trend of garage-band rock, although a whole lot of that was endless variations of “Oh, we’re sad, and we don’t know what to do with our lives.” Bring back the draft, was my unspoken suggestion.
Some of the modern music that you can actually honest-to-Og dance to? Kinda like it. Rap? Would not find it in my heart to grieve if someone threw every rap “song” every made into a hole and bulldozed over the top.
I dunno. Butter sculptures?
Bagpipe? That’s not a form of art. That’s a form of torture.
You can’t say that. You have to act it out.
(Firing a pair of six-shooters at the floor near your feet) Dance, you son of a bitch! DANCE!!!
Pfft, I’d replace Hollywood with Japanese anime studios in a heartbeat…
Nothing Hollywood has EVER produced has been as moving to me as the average Miyazaki film.
Even the stupid-popcorn-action movies don’t compare to the sheer wonder and fun of something like One Punch Man.
Movies.
I’ve been to a few, and even enjoyed them, but overall, I wouldn’t care if I never saw another movie again. There’s lots of art that I don’t enjoy, and/or don’t care about but I understand that other people do and I probably just don’t get it. With movies, I’m pretty sure I have the same kind of experience as the people that really like them do, but I don’t value it as highly, or really much at all.
Smile when you say that! 
Country music, and its auxiliaries, square and line dancing.