I stumbled across this the other day and it is now my shining bookmark of light when I need a quick emotional pickme up.
http://www.jamsandwhich.com/flash/
It contains a good number of flash videos both old and new...most of which are hilarious.
My favorites:
http://www.jamsandwhich.com/flash/alcohol.swf - Alcohol warnings
http://www.jamsandwhich.com/flash/blunder-cats.swf - Thundercat spoof
http://www.jamsandwhich.com/flash/britneys-breasts.swf - Britney's mystery breasts
http://www.jamsandwhich.com/flash/georg.swf - Geroge W. Bush's personal flash
http://www.jamsandwhich.com/flash/heroes.swf - Clerks spoof
http://www.jamsandwhich.com/flash/mario.swf - You got to watch it all to love it
http://www.jamsandwhich.com/flash/xiaoxiao-3.swf
http://www.jamsandwhich.com/flash/yatta.swf - Granted if you haven't seen the original disturbing video...this one may not have as much of an impact
http://www.jamsandwhich.com/flash/love.swf - I want a teddy bear like this
Enjoy =)