I really want watch some of the old Doctor Who But I head that some are lost.
Yes Blaze Boy, there are some episodes that are unfortunately lost, but they were mostly from the William Hartnell and Patrick Troughton eras, and this was due to the BBC's policy of wiping episodes back in the 1960s. Of course, it should be stressed that Doctor Who is not unique in this respect, as other series were also victim of this wiping policy, and it wasn't just the BBC who did it, as the ITV companies did it with
The Avengers, which was created by the same man who created Doctor Who. But that story is for another day. It was done for economical and space-saving reasons, even though some episodes that were considered lost were eventually found from foreign broadcasters who broadcasted the program.
According to Wikipedia, there are 45 lost episodes (from 12 serials, including seven complete serials) from the William Hartnell era and 63 lost episodes (from 15 serials, including 4 complete serials) from the Patrick Troughton era. There was one serial from the Jon Pertwee era that was lost (
Invasion of the Dinosaurs), but that was recovered, even though Part 1 was in black and white and the rest were in colour). But they are working towards the colourisation of part 1 of that particular serial. Here is an article about these lost episodes (
http://en.wikipedia.org/wiki/Doctor_Who_missing_episodes).
Apart from that, I would like to see some of the old episodes, in particular those from the Tom Baker and Peter Davison eras. And I should stress that Matt Smith is just a few years younger than Peter Davison was at the time he became the Fifth Doctor back in 1981.
And I think Amy Pond (played by Karen Gillan) could be up there with Sarah-Jane Smith (played by Elisabeth Sladen in the Pertwee, Tom Baker and David Tennant eras) as one of the greatest companions ever.