Blackadder: Back & Forth is a 1999 British science fiction comedy short film based on the BBC period sitcom Blackadder that marks the end of the Blackadder saga. It was commissioned for showing in the specially built SkyScape cinema erected southeast of the Millennium Dome on the Greenwich peninsula in South London. The film follows Lord Edmund Blackadder and his idiotic servant, Baldrick, on a time travel adventure that brings the characters into contact with several figures significant to British history.

The Millennium Dome was the original name of the large dome-shaped building on the Greenwich Peninsula in South East London, England, which housed a major exhibition celebrating the beginning of the third millennium. As of 2022, it is the ninth largest building in the world by usable volume. The exhibition was open to the public from 1 January to 31 December 2000. The project and exhibition were highly contentious and attracted barely half of the 12 million customers its sponsors forecasted, and so were deemed a failure by the press. All the original exhibition elements were sold or dismantled.