Now that your PS3 is well-acquainted with its resident Linux system (you've already installed it, right?), you're bound to hit gold sooner or later. Besides, if it can support Linux, then it can support pretty much anything that The Penguin can handle. Let's have a test run, shall we? Guess what we found over the net:
SCUMMVM v0.9.1 PS3 Binary is basically the emulation code you'd need to use on the Linux in your PS3. ScummVM is an implementation of the SCUMM (Script Creation Utility for Maniac Mansion) engine used in various Lucas Arts games such as Monkey Island and Day of the Tentacle.... Also ScummVM is capable of playing several non-SCUMM games."