I'm hooked. It only took one edisode, and now I'm completely hooked on the adventures of a time travelling alien who looks like you'd imagine Ichabod Crane would, and who travels the galaxy in a blue police call box.
It's whacky and scary and smart - and the decor reminds me of the old Star Trek episodes (before they started taking themselves too seriously).
It's a terrifying look at human nature, and yet it's uplifting too. It's got great actors and great scripts.
In short, you have to see Dr. Who.