Heroes is great, segwist. When you do get a chance to see it on DVD, you'll be hooked.
I admit Lost sort of... lost me at the beginning of last season. I watched out of obligation because I hadn't missed a beat - and yeah, there were a few stinker episodes unfortunately. Plus the continuity of the show is jagged and hard to follow, and with the weeks/months long gaps, it was a challenge getting back into the groove and figuring out who was who and what and so on. But just when I about lost hope, Lost picked up again with some great episodes which left me pleasantly surprised. The last 3 or 4 episodes of the past season were really, really good.