You may watch them at:
Actually those 3 Incredible Hulk are almost a complete summary of what happens in the Incredible Hulk movie:
– Bruce Banner is away,
– the military finds him,
– Blonsky begins to personaly hate the Hulk,
– and the final battle between Bruce Banner transformed into the Hulk and Soldier Blonsky transformed into the Abomination.
Now if the plot isn’t developed enough for you: should still have a look to the marvelous special effects of the incredible hulk.