The X Games

Yes

Slalom gets pretty close in some ways. It’s amazing to watch what someone highly skilled can do, even when just practicing.

Short answer: yes—Wikipedia: Artistic Roller Skating. I’m guessing your country’s governing body (e.g. USA Rollersports) could direct you to some if you were interested.

As someone who skates and hasn’t rollerbladed since 2010 and does not perform on either, I’m going to say no. If you’re asking because you’re going to see a performance, it’ll probably be just as enjoyable. But if you’re asking because someone you know is bragging about rollerblading, they are full of shit.