Dominic998: ScummVM has always been able to support some Sierra games, hasn't it?
Still, if it could support Gabriel Knight that would be beyond awesome, as I could play it with MIDI-support :)
ScummVM is such a good piece of software (no offence to DosBox which does a very good job considering how many games it can run).
TheJoe: Not Sierra games, no. It supported the fan made AGI engine, which was basically a clone of SCI, but apparently worked differently.
AGI (Adventure Game Interpreter) was the engine for Sierra games before SCI (Sierra Creative Interpreter) came out. Games such as the original KQ, KQ2, KQ3 and the original SQ and SQ2 ran on it. And yes, ScummVM did support these games long before they supported SCI with the latest release. You're confusing it with AGS (Adventure Game Studio), which is used for many fan projects such as the KQ1, 2 and 3 VGA remakes. It is not supported by ScummVM, and runs an engine similar to the SCI engine, but capable of higher resolutions and more colours.
Edit: Weird, those posts before mine saying essentially the same thing didn't show up, even though it says they were posted hours before. Sorry.