There is a required endorsement in the FAR's pertaining to tail wheel airplanes, but I have that. So, I'm now current to carry passengers, according to the FAA, at least during the day.
I did my TD transition in a Super Cub, and I felt like it was almost cheating. It was a real great experience.
Now, in my 150/150 TD, it's a little more squirrely, but fun at the same time. Those rudder pedals really work. (even the wrong way)