I've tried the TV method but never really felt like it worked. In contrast, after a session or two with Rosetta Stone, I'd walk away with some basic Spanish or Arabic kicking around in my head. It's really pretty amazing, but as I said before the issue is that people (including myself) always quit RS because it's still a chore.

I guess the upside to TV is that it's not a chore and people would be less likely to quit.