Dr Who

Dr. Who and I have a long history. I blame ( or maybe thank) my Mom for a lifetime addiction to sci-fi-tv since I was watching Dr. Who as a toddler in the UK instead Sesame Street like my peers at home in the States. I rediscovered him as a teenager on PBS and hosted Dr. Who nights in my college dorm. What I want to know is this: are any episodes currently being aired in the US or are videos available? And how many Doctors had they created by the time the series ended? I quit watching after the Dr. with the stalk of celery in his lapel began airing.