A community-minded individual has uploaded an original Half-Life trailer to Google for the masses to watch.
Distributed on a coverdisc back in 1996, it shows gameplay footage from the first game, including plenty of rooms and levels that never made it into the final game.
There are also some nostalgic favourites - that bloody-great-three-armed-tentacle thing for a start. Who remembers the hassles of trying to get past that?
There are also early models of the scientists and headcrabs which make for amusing viewing.
The game seems to have aged well, with the beginnings of the Half-Life heritage clearly visible.
Go check out the video at Google
, then let us know what you make of it over in the forums.