Fringe
"Sci-fi FOX drama, Fringe, a research scientist named Peter Bishop and FBI agent Olivia Warren team up to investigate paranormal activity. They seek help from Bishop's father, Walter, a brilliant (but possibly insane) scientist who is being held in a mental institution. Fringe explores mysteries of the paranormal as well as the relationships between the characters, and is steeped in mythology."
I've only watched the first 2 episodes but I'm loving it already. It's a bit like x-files, (which I couldn't stand), except you don't have to endure that ugly red haired bint.
There are 2 seasons so far with loads of episodes in each season so it should keep me going until my other favorites start back up again.