I only know two people who have been disappointed in Veronica Mars after they started watching it. Seriously, it's so good. I delayed watching it for ages and then finally after about four friends told me I just had to, I borrowed it and promptly became obsessed. It's just really good and clever and in one show there are about 8 different genres. Sadly, it got canceled, but the director/cast made a few "mini pilots" showing what the fourth season could have been like - where Veronica is now in the FBI. As Entertainment Weekly put it, it's kind of like Alias, without Rambaldi, and therefore it is pretty damn awesome. I miss this show. It was such a great viewing experience - the kind you turn down invitations for. (I mean that.)
Believe it or not, I'm going to bed right now. I am very excited about sleep.