Bolt - it's what everyone truly waits for in the Olympics. The whole world goes silent before the gun goes and then that's it. Watching the quick starters and then bolt straightening up after 25/30 to then blaze through like it's nothing will always be electrifying. That first Olympic gold will stay with me forever.
Woods - produced the money shot of the ages with that put for nike. Still get goose pimples when I watch it. Mesut mentioned above, but he didn't really revive golf as much as opened it up to normal non winged up people including me in a round about way tbf.
Other: ronaldinho - ok his peak didn't last as long, but there were a few seasons where he was simply on another plain to anyone else I've ever properly followed in football. Some of the stuff he did on the pitch at the highest levels were just simply impossible. I remember there was one season where every week, he was ending careers for Barca. His technique and ball control, the skills, his fks sombreros were perfectly executed but also advanced play.
Man had every kid my age learning how to do the flip flap across every school ground in the world.
He actually has a decent singing voice to cap it off.
Honourable mentions:
Ronnie O'Sullivan - king of kings. So talented he made everyone else look like complete plebs. The way he switched cue hand so that you couldn't tell if he was a leftie or rightie.
Loved watching him play and I wasn't even really into snooker.
Emmit Smith - I was really into American football at one stage and Smith was at the top of his game during that period. Man made many a surgeon rich with the amount of ankles he broke. Swear to god there were times you thought he must he dead after a whole defensive line pounced, only for him to barrell roll out in to open field from nowhere.
Certified shape shifter.