Wich adventure games, have you completed without using a walkthrough?

[voh]

Monkey Island 1, 2 and 3.
Grim Fandango
Beneath a Steel Sky (that was a bastard to do)
Space Quest 1, 4 and 6
King's Quest 6
Sam and Max (however random that turned out)
Hopkins FBI
Chronomaster (but it wasn't good, oh no!)

That's it. Nice little detail - Monkey Island 2 I finished before 1, and it took me 2 years. 2 YEARS! Why? Because it was installed on the 486 at my dad's work - and we only had a 286, without a cdrom drive, and I didn't know how to put the 10 meg datafile on floppies. When I finally figured out that ARJ could splice its archives - I finally took it home - but I had figured out the last LeChuck puzzle after 4 months of stagnancy :p

[enterthewumpus]

Games I have completed without walkthroughs or hints:

.....
I have never completed an adventure game on my own. I feel stupid whenever I do give up and go to a walkthrough, but in some cases I think that that is better than being frustrated to the point of punching your computer until your hand falls off.  Someday though..Someday I will do it.....

[Corey]

all Ben Jordan games 
all Tomb Raiders (not sure if that is a real adventure game)
Sybrinia (or whats it called)