It's annoying Flash, but it's worth it:

The Adventures of Seinfeld & Superman

Make sure you check out the Today Show interview and the "Wyoming!" sing-along.

Slate says it's "'branded entertainment,' which basically just boils down to increasing the insidiousness of product placement." AdAge calls it "a very expensive novelty with limited reach." I just think it's funny. And worlds better than that Smallville crap.