So I was reading this Ask Slashdot article by someone who can't distinguish between conversation and background noise. They were complaining that TV shows are all captioned due to gov't regulations, but web videos generally aren't. I looked around, and it seems that YouTube doesn't have nice captioning support yet, but Google Video does, as announced nine months ago.
Unfortunately, content providers still need to actually apply captions. Well, I figured I'd do my part, and so went ahead and added captions to the Google Video version of Toast Wars. :) You can click the CC icon at the bottom right to toggle the captions.
(Sadly, the higher quality original version of the movie is still uncaptioned, because there's no easy way to close-caption QuickTime movies.)