FanFiltration said:

In addition, a dozen short films (each around twenty minutes in length) will be released on the internet, using narration over animated panels of the comic strip to familiarize newcomers to the story. These may also be released on DVD. http://en.wikipedia.org/wiki/Watchmen_(film)

They've released 7 of these so far. They are more like 5 minutes each, but they are animated panels from the original comic with narration akin to an audio book. The only place I've found them is on Verizon's cel phone video downloads. They're pretty well done.

-T

EDIT: They're called Watchmen Motion Comics, and apparently they're available over ITunes too. And I just checked, Demonoid has them.