I'm learning a foreign language. There are several online sites that have Flash video in the language I'm learning (e.g., Hulu), which is great. Unfortunately, they have English subtitles, which is (depending on who you ask) somewhere between "annoying" and "actively harmful to my learning".

When I'm watching them in a window, I can just move them near the bottom of the screen, or put another window over them. That's awkward, but it kind of works.

But I'd like to watch them full-screen, on my TV set. Full-screen Flash doesn't let me put any window on top of it.

Is there a way to watch an online Flash video but block out part of it?

I'll probably be using my Mac for this, but maybe Linux -- solutions for either one welcome.