An old friend of mine emailed me out of the blue to point out that I hadn't mentioned the version of ScummVM for pocket PC's. You can now play all your favourite games while commuting or pretending to test pocket PC games at work. I myself would never ever pretend to test a game while playing an entiretly different one... honest guv.
Update: In the tradition of ScummVM threads I'll update to point out that there is also a Macintosh version of ScummVM under development for MacOS X. Apparently there is a second Mac port underway by the author of SCUMM Explorer, but it doesn't have a website. - Jake
Source: old friend: Steven Mileham!
If that's possible, that is.
Simple as that. :D