Great games. The other Lucasarts titles were defiinitely worth a go as well. Loom was pretty damned good, a shame it never finished off as it was meant to be a trilogy I believe.
Gonna plug another of my favourite series here, if anyone's a fan of that style of old school humour, but would like a bit more gameplay in terms of battle, etc, the Quest for Glory series is fantastic. If you're capable of playing through older games, and like them, its definitely woth a go.