OK, this might sound like a really rubbish show, but stick with me on this.
The Doctor is a 900 year old alien who looks like an ordinary human being and travels around the universe. His ship can go not only anywhere in space but also travels through time, and is absolutely enormous. Well, on the inside anyway. On the outside, however, it just looks like a small blue telephone box. The reason for this is that the ship is SUPPOSED to blend in with its surroundings, but when that special feature broke the Doctor just didn't bother to fix it.
The old show was famous for its wobbly sets, and aliens that looked like dustbins, but it was revolutionary for its time, being released a few years before even Star Trek started. It was cancelled years ago however as many viewed that its golden age had gone.
But a new golden age has risen. In the UK it has won a great many awards, including Best Drama. This is because this time the show has adapted, including great scripts, great effects and great acting. It also does not make new viewers feel like they had to have watched any of the old series, giving the show a fresh start.
Trust me, Doctor Who is the best drama that has been made in the UK for quite some time.