YouTube Trick - High Quality - &fmt=18

Here's an interesting little youtube trick....

If you add: &fmt=18

to the end of any url... for example:

http://www.youtube.com/watch?v=ONa5t8w1hmc&fmt=18

from

http://www.youtube.com/watch?v=ONa5t8w1hmc (notice the &fmt=18 at the end)The videos will play higher quality image and sound.  This is in the beta stages apparently still.  It does take a little bit longer for the videos to start depending on your connection.

Apparently adding &fmt=6 or &fmt=18 to the end of a video link returns a H.264 encoded clip at 480×360 resolution with a bitrate up to 850K.  (Which basically means... higher quality.)