Yeah, once and future king and all that... The Rassilon thing was actually by no means the most WTF thing about it all...I just assumed that in the darkest days of the Time War they somehow found a way to bring back their greatest hero ever - of course, we always knew Rassilon was a wrong'un going way back, so they got what they deserved! ;D

As for Jack...the most amazing thing about the Jack scene (and I'll admit that I quite like the cheesy Star Wars cantina ambience) was that Jack didn't fly across the room and start remorselessly beating Ten while screaming "WHERE THE HELL WERE YOU DURING CHILDREN OF EARTH, YOU BASTARD?!"