I get the same feeling to do a vid to anything I like, to me it's not just limited to anime. I made other MVs...well, so far only one...but there could be more.
How can anyone suffer from a mass of panty shots I do it because well, it passes the time and it's fun. It's aggrivating tho when you keep doing a scene over and over to make it better or you have 'writer's block' and cant think of what to put in one spot.