zeogold: Depends. What genre do you enjoy the most? I'm primarily an adventure/puzzle/point and click fan, so I could tell you all about such games as Ben There, Dan That, The Testament of Sherlock Holmes, Q.U.B.E., Myst, Memoria, or even World of Goo, but I have no idea whether you'd actually like this stuff or not.
I also don't know which you've already played, either.
CarrionCrow: Just keep going with ones you think are good. That works for me.
Alright, well...
From your list, I personally played and enjoyed the most:
The Testament of Sherlock Holmes
Sherlock Holmes versus Jack the Ripper
realMyst
Ben There, Dan That/Time, Gentlemen, Please!
Her Story
The Raven: Legacy of a Master Thief
VVVVVV (note: I haven't played through the whole thing yet)
The Inner World
Gabriel Knight: Sins of the Fathers - 20th Anniversary Edition
Broken Sword 5
The Secret of Monkey Island
Another World
Sam & Max Hit The Road
The Black Mirror
Machinarium
Gabriel Knight 2: The Beast Within
TeenAgent
Beneath a Steel Sky
That's all that comes to mind after a quick/not-too-deep scan. If you like, I could explain what I particularly enjoyed about each game, or point out games I didn't like as much.