This video thingy, what ever the smek it is, It is beautiful. This made my day, no life, a little bit happier. It reminds me why I love Doctor Who, because he is amazingly funny and he just makes everyone's life just a little more brighter. Thank you for posting this.
Crack's a slang word for Gossip from the north of England. This means that saying 'I've got good crack guys' just means 'I've got some great stuff to talk about'. My guess is that the first crack stories/videos got so many people talking, it eventually just started to mean utterly senseless but entertaining things.