Search YouTube for a speed run on it
it's truly gobsmacking.

(Damn my work's firewall for blocking Monkeon's host.)
( Matazone Nine and a half years? Poot., Fri 29 Aug 2008, 13:39, archived)

Speedrun?
Sorry to be an idiot, but do you have a link? Searches on YouTube for things like "jet set willy speedrun" fail me ...
(annexia, Fri 29 Aug 2008, 19:52, archived)

Jet Set Willy Walkthrough
video.google.com/videoplay?docid=132979557439256825

A walkthrough of the game with the official patch applied to actually make it completable.

More speccy walkthrough videos here: www.rzxarchive.co.uk/videos/
(Speccy, Sat 30 Aug 2008, 17:03, archived)