project called ScummVM, which runs games using the SCUMM engine
(Script Creation Utility for Maniac Mansion) which was used in several
games including the Monkey Island series and Day of the Tentacle.
It's also here on sourceforge, at
http://scummvm.sourceforge.net/
A great project, working near-perfectly except for the sound at the
moment. See the nightly builds page for binary copies of it.
The only real problem that I have with it, is that I can't play Monkey
Island 2 with it. The version that I have wasn't shipped with the
copy protection codewheel that it had when it was originally released,
it came cracked. But the copy protection is built in the SCUMM script
of the game, and not in the executable. So, the upshot of all this is
that it fully emulates the copy protection.

of it. But other than that, this project is cool as hell.