- Beneath a Steel Sky
- I Have No Mouth and I Must Scream
- Blade Runner
I can wholeheartedly recommend:
The Chzo Myth Quadrilogy
In order: "5 Days a Stranger", "7 Days a Skeptic", "Trilby's Notes" and "6 Days a Sacrifice"
One of the most atmospheric (and scary) adventure series I've ever played - it's fully independent and 8-bit.
You can download the series here: http://www.fullyramblomatic.com/games.htm
Sierra's Manhunter: New York
One of the lesser known Sierra adventures, Manhunter: New York (and its sequel, Manhunter: San Francisco) depict a a dystopic future in which humanity has been enslaved by Aliens. Rudimentary point-and-click interface.
Molleindustria's Every Day the Same Dream
More recent, this small, existentialist Flash adventure lets you live the same nihilistic dream over and over again.
Play it here: http://www.molleindustria.org/everydaythesamedream/everydaythesamedream.html
The path is a surrealist, open-ended horror adventure ... "game" is the wrong word - rather: "landscape", based on the Little Red Riding Hood fairy tale.
More info here: http://tale-of-tales.com/ThePath/