Alexei Yagudin's Gladiator immediately comes into my mind. It was a pretty cool move.
Jason Brown does beautiful spirals and hydroblades... here in his 2016 FS at Skate America to The Piano... hydroblade is at 3:32 preceded by two gorgeous spirals..
https://m.youtube.com/watch?v=LtbZP688V9w
I really like the exit of this hydroblade (gif). Videos on youtube are blocked but I have found a clip on twitter https://twitter.com/tegomass/status/985410773714391041. The hydroblade is at 0:38