Britney announced to the world that her alter-ego is called Mona Lisa (I'm sure Esther, Mimi and Damita Jo all approve). It is her persona when she wants to be "mean".
The video credited the directors as Billy Woodruff and Mona Lisa.
Lastly, when asked if she was going to release an album soon she only said that she was working on something that "wasn't an album" but that it is a "show", but "not a tour", that would be out "next year". Hmmm ... You can download audio of Britney's appearance on TRL HERE at BreatheHeavy.com