In an independent political Internet video sponsored by the Jewish Council for Education and Research (!), Samuel L. Jackson urges political activists to get serious about re-electing Obama. Partisan, over the top, and something like what you'd expect if Samuel L. Jackson starred in a Dr. Seuss adaptation (The Cat in the Beret?). Warning: lots of bleeped language, but come on, this is Samuel L. Jackson, you expected maybe euphemisms?
Update: There's also an unbleeped version.