I thought Loom was a little... I dunno the word. Not illogical, but close.
Well I started off with Maniac Mansion and Zak McKracken. I love both of those games.
I love the old Sierra 'Quest' games, too. Under A Killing Moon was fun, Beneath A Steel Sky was pretty cool, as was Rex Nebular and the Cosmic Gender Bender. In fact Rex Nebular was awesome!
Bring back the hey-day of Adventure games I say!
Rage. What better time than now?