Duran doing cross rope kasatskis is about as impressive a skipping trick as I've seen any champion perform. I also tried it, and it's something that can burn the thighs pretty quickly.
HErol Bomber GRaham skipped for over 27hours to break the marathon skipping world record a few years ago
Without a doubt, Tommy Burns has the most impressive filmed efforts, and i dont think anyone comes even close. I think it is Janitor who first alerted us to the Tommy Burns Levitation skip and it is their in film for all to see. To this day, no one has managed to duplicate it.
Probably some little girl from the ghetto. Anyway, honorable mention to Vinny Paz...ienza and Mike Tyson.
Check out this black and white film of an old-timer :yep [ame]http://www.youtube.com/watch?v=LaQROl-bl1M[/ame]