I don't know of a PPA for it, but grabbing the Debian 64-bit package from here: http://buildbot.scummvm.org/builds.html, worked just dandy for me. Been playing Myst on it all day. Just extract (to /opt if you wanna be organized about it) and run.

Ubuntu 11.10 x64, fyi.

So I wasn't sure if this should go here or somewhere else, so my apologies upfront if this is out of place. I just wanted to extend a huge thank you to the people making ScummVM, and especially the people working on the daily builds. I've been a long-time DOSBox user, but I hadn't spend much, or rea...