Basically, all you have to do is submit your favourite moment from any Doctor Who episode so far. It can be new or old, with any Doctor or companion, anything at all really. It's fair to say there are plenty of things to choose from; there have been hundreds of fantastic episodes.
My personal favourite moment was when the 10th Doctor and Rose were reunited during The Stolen Earth. It brought tears to my eyes, and just seeing the looks on their faces was so upsetting... then when that stinking Dalek tried to exterminate him... I would have happily taken Jackie's gun and destroyed it by myself! Argh!
Anyway, leave your thoughts now!