i never get tired of visual effects used to showcase the relative sizes of planets and stars.
the music is Rubber Bullet by stakka and K Tee. i found the video from digg via neat-o-rama.
if you like this, check out the powers of ten video by the eames, played to the galaxy song by monty python: HERE.
or see how hurricanes relate to spiral galaxies and brain cells relate to large scale structure in the universe!