SUPER IMPORTANT!!!!!!!?

okay um you know those things on tumblr.. like pictures....that move and stuff. like clips of a video instead of pausing they repeat...what are those called? question part 2: can someone send me the whateveritscalled of robert pattinson dancing..? if anyone has seen it...hes dancing tango or some ****.i saw it on someones deviantart once but i never found it again... :P please answer this question. it might not be important to you, but to me, its ultra mega urgent. :) xoxo