We really like Smallville, especially the first few seasons. We watched the first four or five seasons on DVD, then caught up to the TV show.
We watched the first 5 seasons of "Alias" on DVDs in about a month and a half from Netflix until we caught up to the TV show. On DVD, several times we'd get so caught up we'd find ourselves watching 3-5 episodes in a row.
Watching TV shows on DVD is so much better, even better than Tivo. Great picture quality, no commercials, and you can watch as many as you want.
We haven't watched Friday Night Lights on DVD, we've been watching it on satellite. Great show.