LOST. Oh, man. What an awesome show. This is the type of show for people who like to become obsessed with a series and anazlyze everything. I LOVE IT. There are so many twists, so much interconnectedness and still so many questions left unaswered that I am dying to know the answers to.
Fringe. If you haven't seen this new show yet, you need to. If you liked The X-Files or if you like J.J. Abrams' style, then you will easily become obsessed with this show. It has many of the same qualities of LOST: people being connected in strange ways, people are not always what they seem, Easter eggs and foreshadowing, cliff hangers, etc. It took me a few episodes to get hooked, but now I am REALLY into it.
I think I am going to have to follow this up soon with a Ryan Murphy appreciation post. I can't think of anyone else to create more than one tv show I like. Anyone else?