There are several videos circulating showing a comparison of the largest stars. I like these kind of things, and I wanted to try one myself. Probably because I also watched "Cosmos" by Carl Sagan as a kid. Actually my first Youtube upload. Hope you like it...
Star Size Comparison
http://www.bbc.co.uk/programmes/b00vzzxk Harry Potter star Daniel Radcliffe performs his party trick, which is singing "The Elements" by musical humorist Tom Lehrer.
Daniel Radcliffe Sings "The Elements"
Interactive: http://htwins.net/scale2/ http://www.newgrounds.com/portal/view/589217 First version: http://htwins.net/scale http://www.newgrounds.com/portal/view/525347 Music (Frozen Star) is by Kevin MacLeod http://incompetech.com/
The Scale of the Universe
Programme website: http://www.bbc.co.uk/programmes/b054fn09 A cutting edge experiment reveals how owls can sneak up on their prey.
The Silent Flight of an Own
