This guy's reaction is hilarious but also touching as he seems to be having a spiritual experience (maybe with the help of some mind-altering drugs).
Watch it until the very end as he gets more emotional. There's already some parody videos like this catchy music remix - http://www.youtube.com/watch?v=MX0D4oZwCsA
I thought the guy was a surfer dude but he's a a middle-aged big cage-fighter who owns farm in Yosemite.
http://www.fastcompany.com/1668361/doub ... t-it-means
Interview with the guy - http://mashable.com/2010/07/08/double-rainbow/