This is going to devolve into ongoing arguments about the definition of spectacular, nothing surer. Haven't read a few pages but I'd wager it may have already.
I'm going to chip in an odd one because I'm not a fan of the bloke, but Patrick Dangerfield.
His entire on-field career is "spectacular", especially so since being in Geelong. He's a great overhead mark, but he kinda flourishes his hands in a dramatic way when he rises for them. He has a particular shoulders back strut when the play stops. He milks his injuries and goes from limping around the park to being the fastest guy on the field in a burst when the ball is nearby. He puts on a show, generates intrigue. Everything he does is a dramatisation of the way a normal player would go about it.
Clearly what is or isn't spectacular is quite subjective.
When I show people overseas videos of AFL players, I find myself showing speccies, great bumps/tackles/stiff-arms, evasive moves, dribble kicks and massive goals from outside 50. Jordan De Goey is probably the best exponent at the moment of all these on a consistent basis.
This is one of the best GF highlight reels we'll ever see:
Buddy needs a mention. The only player who makes AFL look like Auskick sometimes. This goal had me out of my seat, and I hate the swans.
I reckon Tippa is exciting to watch if he is switched on. Patrick Cripps is a bull and should only get better as the team improves. Liam Ryan can be impressive. Orazio and Mckenna are both fun.
I didn't want to put any Richmond players in, but from a defensive point of view, Rance has to be up there. The way he launches at the ball, a lot of time he is going horizontally through the air due to his desperation to get to and end a contest. I know the back line isn't the most flashy group, but if we were just talking about the back line then Richmond has a particularly spectacular style of play down there.