How did she do? I know I am personally having a lot of mixed opinions on this one, but I will agree that she seems a bit under rehearsed and slightly bored. Some sources say that there were problems with the content of the original planned performance, in which Britney collaborated with magician Criss Angel. The source says MTV thought the performance was just too risque and Brit had to tone things down if she wanted to go through with the performance. It is also said the she may have gotten wind of speech that was to be given by comedian Sarah Silverman after her performance and was quite angry.
The almost infamous Video WAS available everywhre, but MTV took it down, It's even unavailable on MTV's site.
Also check out just how bad Sarah Silverman's comments were here
Did she go too far?