I don't know how you feel about text-based adventures, but I really must insist you play Shade (http://eblong.com/zarf/zweb/shade/). It's atmospheric and eerie and had me keeping the lights on for about a week while I slept. ;)

And if you're looking for pretentious symbolic nonsense, give The Path (http://thepath-game.com/) a look. It's a vaguely psychosexual re-interpretation of Little Red Riding Hood!

I am very much looking forward to playing the games you've recommended once I get back on my own computer. :D