The Hadouken song being used in the video is called M.A.D. The original music video for M.A.D. now has about 250,000 views on YouTube. The original video is just as entertaining as it features a guy in a mouse costume walking around causing trouble.

The videos that they used in the mash-up include (ordered from beginning to end of the video):
-FOAR EVERYWUN FRUM BOXXY
-George Bush shoe attack
-Zidane headbutt
-Sneezing Panda
-Inspired Bicycles – Danny MacAskill April 2009
-Man Dominates Exercise Ball
-Exercise Ball Compilation People Getting Hit owned funny
-Boogie Board Faceplant
-fat girl on treadmill
-keyboard cat
-fire baseball
-Soccer goalie is hit in head by rebounding ball
-Break dance accident
-Billy’s Balls 2
-OK Go – Here It Goes Again
-Treadmill Fail
-Extreme Caterpillar Breakdance
-Fat Woman Falls off Table
-Monkey Business: Monkeys as waiters in japan
-Christian the Lion- Reunion!
-Rick Astley – Never Gonna Give You Up
-Amateur – Lasse Gjertsen
-stealth cat
-Dramatic Chipmunk
-Bizkit the Sleepwalking Running Dog
-close landing
-waterslide jump
-MEGAWOOSH – Bruno Kammerl jumps
-Diet Coke + Mentos
-star wars kid
-backflip fail
-afro ninja
-Guys backflip into jeans
-Jumping From 50 Meters High To Water.
-Diving Fail
-Will It Blend? – iPhone3G
-Guiness World Record for most T-Shirts worn at one time.
-Shoes the full version
-Fat Kid Falls in River
-Nattliv – Swedish hostess throws up on live TV!
-hey marine
-david after dentist
-leave britney spears alone
-Best Sex Ever
-charlie bit my finger
-Laughing Baby
-Kassie Kicks Monsters Ass
-Victory Fail
-balcony jump failed
-Boxer Hits Himself In The Face
-leeroy jenkins
-Jumpstyle duo by Jumpforce
-Beyonce Single Ladies Dance
-breakdancing baby
-Tokyo Dance Trooper in Shibuya
-break dance
-Ridiculously Hot LATINA girl dancing, not asian!
-Susan boyle
-Hardstyle Republic
-dubstep dance
-the evolution of dance
-Barack Obama on Ellen
-Crush On Obama
-Where the hell is matt?
-”Thriller” (original upload)