Faust has now been mentioned, and a few more new entrants as well - Grail Quest, KQ4 and possibly the best voiced game in Ceremony of Innocence.
Grail Quest becomes the oldest game and like so many others it still remains unplayed on my shelf - too many games, so little time.
8 Nancys have been mentioned, all 7 versions of Myst, and the 4 Broken Swords.

Shockingly, I realize I have only played 4 new games since last year's list, and I'm still on hold with one of them .
Anyhow, I'm still going to add my list, though it is likely quite similar to last year's.

Riven
Obsidian
Myst Exile
RealMyst
Rhem
Zork Nemesis
Schizm
Riddle of the Sphinx
Black Dahlia
Gabriel Knight 2 Beast Within
Gabriel Knight 3 Blood of the Sacred
Dark Fall Lights Out
Alida
Neverhood
Morpheus
Tex Murphy Pandora Directive
Tex Murphy Under a Killing Moon
Beyond Atlantis 1
Zork Grand Inquisitor
Amber

Quite similar is perfectly fine Colpet

My list in no particular order:

1. Black Mirror
2. Blackstone Chronicles
3. Amber--Journeys Beyond
4. Inherent Evil
5. Morpheus
6. Syberia
7. DarkFall
8. Last Half Of Darkness Shadows Of The Servants
9. Dreamfall
10. Nancy Drew--Message In A Haunted Mansion
11. Nancy Drew--Treasure In The Royal Tower
12. Shivers
13. The Messenger
14. Discworld Noir
15. Phantasmagoria
16. REAH
17. Clue Chronicles--Fatal Illusion
18. Still Life
19. The Watchmaker
20. Scratches

I know some of these probably aren't very popluar, but they stand out in my mind of all the games that I've played.

Dawn

I am going to give this a try for my first time. I think I was partly influenced by the excellent choices of dmtomchick, but I also tried to make choices based on how I would represent the whole genre of Adventure games. Here goes.

Grim Famdango
Monkey Island 3
The Watchmaker
ND- Scarlet Hand
Voyage
Blackstone Chronicles
Missing
11th Hour
Riddle of Master Lu
Sherlock Holmes The Case of the Silver Earring
Sanitarium
Myst III
Amber
Still Life
Inherent Evil
Torin's Passage

It is funny how some people go 3rd person games while others pick mostly 1st person games. I like them both.

Here's my list (in no particular order):
1. Syberia I
2. Syberia II
3. Black Mirror
4. Dreamfall
5. Post Mortem
6. Beyond Atlantis
7. Gabriel Knight: The Beast Within
8. Gabriel Knight: Blood of the Sacred, Blood of the Damned
9. Black Dahlia
10. Faust: Seven Games of the Soul
11. Destination: Treasure Island
12. Indigo Prophecy
13. Realms of the Haunting
14. Secrets of DaVinci
15. 7th Guest
16. Barrow Hill
17. The Longest Journey
18. Agatha Christie: Murder on the Orient Express
19. The Secrets of Atlantis: The Secret Legacy
20. Scratches

In no special order:

Keepsake
Gabriel Knight 2
Gabriel Knight 1
Gabriel Knight 3
Myst III
Tex Murphy -Pandora Directive
Sherlock Holmes -The Rose Tattoo
Sherlock Holmes -Serrated Scalpel
Syberia 1
Syberia 2
Monkey Island 1
Monkey Island 2
Simon the Sorcerer I
Indiana Jones-Fate of Atlantis
Kyrandia I
Kyrandia II - Hand of Fate
Realms of the Haunting
American McGee's Alice
Twinsen's Odyssey
Relentless
Black Mirror
Aura I

Hi Oldmariner, you only listed your top 10 and you know you can add 10 more - flotsam made it your top 20 this time.....what else do you want on your list?
Love, Betty Lou

You can have "up to" 20, but if you only want 10 Oldmariner that is perfectly fine.

Ana

One week to go.
A few more games made their first appearance on this years list, and Syberia has opened a small gap at the top. I think its gunning for 4 straight.
Keep them coming!!

I like to be different so, in no particular order:-

1. Tears of Betrayal (it WAS a fun game as Chrissie has it on her list as well)
2. The Awakened
3. Runaway2
4. ND - Danger by Design
5. Tunguska
6. Nibiru
7. Darkfall - The Journal
8. Barrow Hill
9. Journey to the Centre of the Earth
10. Echo
11. Jazz and Faust
12. Black Dahlia
13. Gabriel Knight - Beast Within
14. Broken Sword - Smoking Mirror
15. Return to Mysterious Island
16. ND - Curse of Blackmoor Manor
17. Murder on the Orient Express
18. Black Mirror
19. Zork - Grand Inquisitor
20. Crystal Key 2

Hi Dookie -- you can't include a series -- that makes it very difficult to count individual games. So you'll need to choose one Gabriel Knight game to list and one Broken Sword game to list, for instance.

Sorry Becky, now done.

Hi Dookie Good to see a post from you!!! Tears of Betrayal was so unusual & fun it will be on my list for years!! I'm so glad you've included it too so - it will get at least 2 votes!