OK, here's my list again, with some more titles recently added (so many games, so little time!
Waah.) Some of these I've played a little bit but I uninstalled them later, or had technical problems...
Post Mortem
Still Life
URU: Complete Chronicles
Return to Mysterious Island
Crystal Key 2
Broken Sword 3
The Black Mirror
The Egyptian Prophecy
Journey to the Center of the Earth
Wanted: A Wild Western Adventure (a.k.a. The Westerner)
Road to India
Tony Tough
Shadow of Destiny
Riddle of Master Lu (still trying to get DOSBox to work as well as possible)
Torin's Passage (DOSBox, same as above)
Chemicus
Bioscopia
Nancy Drew (i.e. the games in the recent 4-pack release)
Action-adventure:
Auryn Quest
Arabian Nights (Got to level 3, but had to re-install it! Ack!)
Prince of Persia 3D
Clive Barker's Undying
American McGee's Alice