The one I'm really excited about and one that needs more attention is Friday Night Lights.
The underdog show of the 2006-07 season. It's gotten tons critical praise and if you watch it, you get +5 street cred points. It's the best writen and best acted show on tv right now. It's got a great price, 19.99 (for 22 "hour long" episodes).
A couple of small downsides. downside: It's broadcast in HD, but no HD DVD. They've replaced some music from the original airing and the set is a little light on the extras, but that was done to help get to the low price.
Do yourself a favor and go get this one. This show needs more fans. They even have a money back guarantee if you don't like the season. That's pretty sweet that they put up a deal like that. There's really no reason to get this.