The BBC World Service has put together a special report on the 1989 revolutions in Eastern Europe (they also have a simpler portal). There is a wealth of material, including TV reports on key events from the BBC archives, interviews, a map timeline, a report on Catholicism's role in the 1989 revolutions, a first-hand report of what it was like to gather news in East Germany during that time and much more.
Colour on the Thames is a 7 minute film shot in 1935 using Gasparcolor, one of the many early forms of tinting black and white film. Beside Colour on the Thames, which provides a wonderful view of 1930's England, the only film made in Gasparcolor I could find online was Colour Flight by New Zealand artist Len Lye, an abstract cartoon set to instrumental 1930's pop music. The story of Gasparcolor is in itself interesting, for instance touching on Nazis, Hungary between the wars and early color animation.