Here's my list. Limited only by how few I've actually completed and I can't enter RPG's (dang it!).

Broken Sword 1
Broken Sword 2
Broken Sword 3
Discworld Noir
Freddy Pharkas: Frontier Pharmacist
Gabriel Knight 1: Sins of the Fathers
Gabriel Knight 2: The Beast Within
Gabriel Knight 3: Blood of the Sacred, Blood of the Damned
Grim Fandango
Immortals of Terra, The
King’s Quest 6
Lost Crown, The
Longest Journey, The
Post Mortem
Sam N Max Season 1
Scratches
Still Life
Tex Murphy: Overseer
Tex Murphy: Pandora Directive
Tex Murphy: Under a Killing Moon

Anacapri
And then there were none
Atlantis 3
Aura
Broken sword, the shadow of the templars
Byzantine, the betrayal
Callahan's crosstime saloon
Dark fall, the journal
Discworld 2
Discworld noir
Echo, secrets of the lost cavern
Gabriel Knight 2, the beast within
Hand of fate (legend of Kyrandia 2)
Normality
Pandora directive, the
Sacred rings, the
Scratches
Shivers
Timelapse
Titanic: adventure out of time

Amber Journeys Beyond
DarkFall
Darkness Within
Dreamfall
Dracula Origin
Dracula Resurrection
Gabriel Knight 1
Keepsake
Limbo of the Lost
Longest Journey
Lost Crown
Martin Mystere Crime Stories
Neverhood
Sanitarium
Secret Files 1
Secret Files 2
Still Life 1
Syberia 1
Syberia 2
Zork Grand Inquisitor

1 Amerzone
2 Barrow Hill
3 Blackstone Chronicles
4 Destination Treasure Island
5 Dracula Origins
6 Last Half of Darkness: Beyond the Spirits Eye
7 Last Half of Darkness: Shadow of the Servants
8 Lost Crown, The
9 Moment of silence, The
10 Nibiru
11 Paradise
12 Runaway A Road Adventure
13 Safecracker 2006
14 Secrets of Da Vinci, The
15 Sherlock Holmes Vs. Jack the Ripper
16 Sherlock Holmes: Nemesis
17 Sherlock Holmes: The Awakened
18 Syberia 1
19 Syberia 2
20 Tunguska

Thanks Flotsam!

Ana

Azrael's Tear
Black Mirror
Blackstone Chronicles
Daemonica
Dead Reefs
Death Gate
Discworld
Dust: A Tale of the Wired West
Gabriel Knight 2 The Beast Within
Longest Journey
Lost Crown
Pandora Directive
Sanitarium
Secret of Monkey Island
Shannara
Shivers
Toonstruck
Under a Killing Moon
Zork Nemesis
Zork Grand Inquisitor

Thank you, flotsam!

Although I'll always have fond memories of the old games I cut my teeth on, I so much admire the way technology has moved on and therefore will always prefer good, absorbing, modern games. (Plus I don't have as many teeth left now as I did then ).
Thanks Flotsam, for your mammoth task in collating all this info!

Amber
Barrow Hill
Black Mirror
Blackstone Chronicles
Case of the Rose Tattoo (Lost files of Sherlock Holmes)
Dark Fall 1
Darkness Within
Discworld Noir
Faust
Last Express
Beyong the Spirit's Eye (Last Half of Darkness)
Lost Crown
Mystery of the Druids
Overclocked
Return to Mysterious Island
Rhiannon
Sanitarium
Scratches
Secret Files: Tunguska
Still Life 1

1. Agatha Christie - And Then There Were None
2. Agatha Christie - Evil Under the Sun
3. Agatha Christie - Murder on the Orient Express
4. Black Mirror
5. CSI Miami
6. Dark Fall
7. Discworld Noir
8. Gabriel Knight 3 - Blood of the Sacred, Blood of the Damned
9. Laura Bow 2 - Dagger of Amon Ra
10. Longest Journey (the)
11. Nancy Drew 11 - Curse of Blackmoor Manor
12. Nancy Drew 13 - Last Train to Blue Moon Canyon
13. Post Mortem
14. Return to Mysterious Island
15. Sanitarium
16. Sherlock Holmes - Case of the Rose Tatoo
17. Sherlock Holmes - Secret of the Silver Earring
18. Shivers
19. Shivers II - Harvest of Soul
20. Syberia

Carolin.

No changes from the last one, haven't really played any of the newer ones for the last couple years.

Amerzone
Armed & Delirious (
Beyond Atlantis (Atlantis 2)
Broken Sword 1 Circle of Blood
Broken Sword 2 Smoking Mirror
Curse of Monkey Island
Journeyman Project III: Legacy of Time
Legend of Kyrandia 2-Hand of Fate
Morpheus
Myst/RealMyst
Myst III: Exile
Neverhood
Obsidian
Riven
Sanitarium
Shivers
Timelapse
Torins Passage
Zork Nemesis
Zork Grand Inquisitor

Things are humming along nicely.
Having a look at series, all 3 Gabriel Knight games have received mentions, and ditto the Agatha Christie games. All 4 Broken Sword games have been mentioned, as have all 4 Monkey Isalnd games and all 5 Carol Reed games. 5 KIngs Quest games and all of the 6 non-live incarnations of Myst are on the list, and 9 of the Nancy Drew games have received recommendations.
Conversely, non of the Leisure Suit Larry games have yet rated, nor have any of the Quest for Glory games (5 got mentioned last year, although they probably best belong on the Darkside). No Egypt games yet either.

So many new games out that I haven't played but the following.

1. Barrow Hill
2. Darkfall - Lights Out
3. Destination Treasure Island
4. Journey to the Center of the Earth
5. Keepsake
6. Mysterious Island
7. Nancy Drew - Haunting of Castle Malloy
8. Nancy Drew - Last Train to Blue Moon Canyon
9. Omega Stone, The
10. Riddle of the Sphinx
11. Siberia I
12. Siberia II

" .... nor have any of the Quest for Glory games."

I put those on my "Darkside List" !!

I am playing Culpa Innata and enjoying it so much. It would definitely bump something off my list, but I guess it will have to wait until next year.

I reckon you are right Mad. So abra cadabra

flotsam !!!!

My list:
Amber: Journeys Beyond
Culpa Innata
Dark Fall: The Journal
Darkness Within: In Pursuit of Loath Nolder
Faust
Gabriel Knight: The Beast Within
Grim Fandago
Inherent Evil
Lighthouse: The Dark Being
Longest Journey
Morpheus
Myst
Riven
Sanitarium
Scratches
Shivers 1
Syberia 1
Tex Murphy: Pandora Directive
Zork Nemesis