They might not have a nice tidied up season of Dexter, they were given two more season ages back (along with weeds) so they've got room to keep it going over the season if they want (depending on when it was shot and when they found out).i dunno....Entourage's season ended on a high note....with no actual cliffhanger. Vinnie Chase getting a lead part in a Scorcese film. Although didn't seem like that much happened in the season itself. Although you're right about showtime, im sure Dexter's finale will be giftwrapped with a nice bow.
As for True Blood, have to say I really loved this season of it. The main reason I'm watching it is because I knew it'll be getting it's second season for sure after only a few shows.
One thing I'd like to request in this topic is that things people post about the books past the current season be put into spoiler code. I might end up reading them, but I'm not really wanting everything to be spoiled by you lot before I get the chance..