I use Lovefilm via the internet access on my Sony Bravia. I haven't found a way to get subtitles displayed and I guess that they're just not available - but I thought I'd ask here in case I was missing the way to do it. Is it possible?
For anyone who's interested, I asked Lovefilm this question and they said that it's not possible at the moment, but they're actively working on providing this functionality (but they don't have a timeline yet).