I've found that my SS will record DVD/BluRay playback from my BluRay player (LG BD390) using the composite input. The recording I get is "squashed" 4:3, such that if I change the aspect to 16:9 on the TV, I get a normal letterbox picture of decent (though not HD) quality, without side bars (nice if I want to mail the disk back before I'm done viewing it).
I've read here that some cable boxes work that way as well (Pace?), but my Motorola (Comcast) does not (no 'aspect' button), and I don't subscribe to HD now. Is there another way/device that will let me record "squashed" letterbox cable broadcasts on my RTV?