Here's my expanded version of the TIH movie origin:
After hearing the success of the SSS that created Captain America (not referenced in the film), a defense contractor decided to create a variant of the serum that would be stablized through gamma radiation(Cap's serum was stablized through radiation called "vita-rays"). They picked an unwilling guinea pig (Banner) as a test subject. He believed that they are working on a project that helps soldiers survive leathal amounts of radiation. Then he realizes at the last minute that they're lying. He's strapped to a chair (akin to the TV version), injected with the SSS variant and was bombard with gamma radiation. The radition was so intense that Banner's muscles grow big, his shirt was ripped and his skin turns green. He was so angry that he destroyed the lab and killed most of the staff and the CEO of the unnamed defense contractor. Then he reverts into his normal Bruce Banner self, not remembering the destruction.
ABOMINATION' ORIGIN
After hearing about the Hulk's various appperances, General Ross sees him as a threat to the nation. Thus he sets up "OPERATION:ANTI-HULK"; a genetic-enginnering project designed to create a controlled super-soldier capable to rival and defeat the Hulk. Their latest test subject is a past-his-prime U.S. soldier named Emil Blonsky. He's strapped to a similar chair, was injected with the Hulk Serum (that SSS variant that can be stablized by gamma radiation, however it was accidentally laced with reptilian and fish DNA from past experiments). As he was bombard with gamma radiation more intense than Banner was exposed, his muscles grow big,his skin turns a pale green, his spine and bones began to stck out of his elbows and heels, and he developed reptilian scales and pointy ears.He then realizes his transformation is stable and promply turns on Ross, injuring him with his protruding spiky bones. Then he heads for NYC to find the Hulk, destroying everything in his path. Feeling that Blonsky would hurt his daughter Betty, he begrudgindly called Banner to stop Blonsky from destroying NYC and killing Betty Ross.
Oh, and Blonsky would be refered to as the "anti-Hulk" instead of "Abomination" and he would look like a cross between his comic-book self and TIH's self.