Will Smith goes on stage at the Oscars and hits Chris Rock then verbally threatens him from his seat

I didn't really think Rock's special was that great.

There was way too much repetition for my taste.

He could have reduced it down to 20 minutes and not really lost any of the laughs.
Yeah, I really liked it but I've never really gotten the "live on TV" thing. I love in-person live theatre and live music, but he would have been better served by honing the material and then broadcasting a more polished piece.

But, given the Will Smith thing, I suppose it would have been next to impossible to avoid leakage of the material ahead of time -- maybe he felt like he had no choice.