This is an all time classic from Game 2's Celtic breakthrough win in Cleveland.
http://www.youtube.com/watch?v=Dm0k2rqEeJQ
Now I hear Barkley making excuses for Lebron
This video even shows it's only 2 steps! So therefore it's legal, what are you complaining about?
This 'pro-hop' was illegal because his leg was still touching the groud when he picked up his dribble. To do the move correctly, you would just dribble once, jump towards your dribble and catch the ball while in midair, effecively picking up your dribble, but since you are already in the air it is not a travel.
The move is similar to picking up your dribble while sprinting because while running at higher speeds there are times when both of your feet are off the ground at the same time anyways.
Heck, you can even jump/pick up your feet (shuffle, sidestep, skip, etc.) as many times as you want while dribbling a basketball as long as you don't pick up your dribble or cup the ball on the underneath. Think of a globe with an equator-line on it; as long as you don't cup the ball anywhere on the lower half (closest to the ground) you are fine. Sometimes when I'm screwing around dribbling, I'll like punch the ball or trap it off of my chest or my shoulder like in soccer - both are legal moves provided you let the ball hit the ground before touching it with your hands again.