Best Transformation(s) in a Seriea

[Purgatory]

http://www.youtube.com/watch?v=xzI7pguRHIs

Know about any super awesome cool transformations? Show us why it's your favorite!

P.S.
Aside from the great music, which SSJ2 Gohan transformation seemed better?

[uncanny_sama]

ichigo bankai first time

http://youtube.com/watch?v=5gBWSsMo0-E

[Catterix]

Personally, I also think that FUNimation transformation was really good. The music played as #16 died was haunting.

The only thing that killed it for me was the melo-dramatic speech made by Gohan; which was silent in the Jap version. And nothing beats that song used in the Jap; Release The Power or something.