Personally Im waiting for Eureka. Love that show but seemingly they are only doing 10 more this summer (to finish off last season). Burn notice is another favorite of mine.
Eureka fan eh? They actually use my old high school as the main science/headquarters building and do lots of filming there. In my last year of High School I was luckily enough to be an extra and sat right behind Joe Morton in one of the scenes (so you can actually see me[:D]). I talked with him for a bit and he's a really nice guy!