"Watchmen: Tales Of The Black Freighter/Under The Hood" is on DVD/Blu-ray and OnDemand tomorrow, March 24, 2009. You can even get it off iTunes. I've already reviewed it and it's good.
Here's a clip from "Tales Of The Black Freighter."
And here's a clip from "Under The Hood," an interview with the author (and original Nite Owl), Hollis Mason.