I never really thought of it that way - about watching the series when it's over and avoiding the end of season cliffhangers. I did watch all six seasons of Six Feet Under on DVD - because I couldn't watch it when it was on tv (the cable channel is too expensive). and I do like watching shows on DVD - you can do at your leisure and go back and watch good parts again!

the dubbing issue I can relate to as well. when I was in Japan, they often showed American movies, but I didn't always have the option to watch with English, rather than the Japanese dubbing. also here, if I rent foreign films, i want to watch with the original language and English subtitles, so I can get a feel for the real language. so I can understand why you'd want to watch Supernatural or other shows in English and French subtitles. it's more authentic:)