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.
At this time ScummVM should be considered ALPHA software, as it's still under heavy development. Be aware that while many games will work with few major bugs, crashes can happen. Also note that saved games can, and probably will, be incompatible between releases.
Also ScummVM is capable of playing several non-SCUMM games.