What's Your Favourite Episode From Season Two?

With Season One over, I started on Season Two. Again. What is your favourite Episode from Season Two?

I think Crossroads Blues is an excellent Episode. At the start you're wondering what the invisible hounds are doing and why. As the Episode progresses, though, you are told what they are and who sent them/controls them.

You can't help wondering if Dean did take the deal to bring back John, where would the Winchester Men be in Season Two. Would John be alive for a couple more Episodes before being bumped off again? Would he still be alive and hunting in Season Four? Questions left unanswered.

It IS an entertaining Episode and it had me riveted to the edge of my seat throughout it.