So my friend linked me a lil while ago and it cracked me up for ages. Its a short vid about animals that are better than you, watch it, now.. or it'll eat you. Then theres this video about sulphur hexafluoride, at first its not that cool, but watch the floating bit at the end and be amazed.

Also on the list of cool, is the Human Clock, basically they have pictures of people with the time written manually for every minute of the day, pretty funky. Last but not least I got told about the MonkeySphere, its interesting so take a look.