I've been on YouTube for a while but recently moved to another video service called Vimeo to host my screencasts, mainly because their site/player looks a lot better. What I've also found is that when you're browsing YouTube you're more likely to come across your average Joe mucking around with his camera phone rather than come across some real talent filming in glorious HD. Anyway, this is beside the point.
Be sure to share this collection of videos, you could use this handy short URL: http://bit.ly/10-awe-inspiring-videos
Bathtub IV & V
Just a quick note on this video, you have to check out the series of these 'Bathtub' videos, they're simply amazing.
Timescapes Timelapse: Mountain Light
Showdown with Zeus -- a lightning storm timelapse
Kuroshio Sea - 2nd largest aquarium tank in the world - (song is Please don't go by Barcelona)
Timelapse - Los Angeles Wildfire
Paragliders at Point Cartwright on the 7D
Life on the front Line - Rough cut