It sounds like maybe you don't know about ScummVM
nor about Residual
. If that's so, then you should.
ScummVM will play all the LucasArts adventure games from Maniac Mansion through The Curse of Monkey Island (plus a lot of non-LEC games), and has been ported to several consoles.
Residual was spun off from ScummVM. It's very, very alpha. Currently it supports crashing Grim Fandango. Eventually it will support crashing Escape from Monkey Island. Someday it'll support playing those games (and others). No ports have been produced yet but probably will be some day.