And mine:

The Longest Journey
Runaway
Dark Side of the Moon
Gabriel Knight 2
Phantasmagoria
Kings Quest 6
Journey To The Center Of The Earth
Space Quest 5
Quest For Glory 3
Pandora Directive
Tex Murphy Overseer
Leisure Suit Larry 5
Kyrandia 2
Monkey Island 3
Broken Sword 2

It is tough to narrow it to 15 with all the great games out there. Here are my top 15.

Gabriel Knight 2 The Beast Within
The Longest Journey
Syberia
Secret of Monkey Island MI1
LeChucks Revenge MI2
Curse of Monkey Island MI3
Discworld 1
Discworld 2
Simon the Sorcerer 1
Simon the Sorcerer 2
Day of the Tenacle Maniac Mansion 2
Broken Sword 1 Circle of Blood
Legend of Kyrandia Book One
Zac McKracken and the Alien Mindbenders
Grim Fandango

Honorable Mention to:
Black Mirror,Sanitarium,Kings Quest 7, Tony Tough, and the Space Quest series.

Thanks I never go to the front page, so I didnt know it was there. Your link doesnt work you left the http// off.

http://www.gameboomers.com/

Here's my favorite games
1. Blackstone Chronicles
2. Dark Fall
3. Harvest
4. Nancy Drew Danger on Deception Island
5. Nancy Drew Ghost Dogs
6. Mystery of the Mummy
7. Loch Ness
8. Titanic
9. Temujin
10. Tony Tough
11. Syberia
12. Broken Sword 3(Love Crate puzzles)
13. The Black Mirror
14. Sanitarium
15. Egyptian Prophecy

Sanitarium
Blackstone Chronicles
Riddle of the Sphynx
Beyond Atlantis
Inherent Evil
Phantasmagoria (Pray its only a nightmare)
Syberia
Black Mirror
Obsidian
Lighthouse
Syberia 2
Crystal Key
Schizm
The Egyptian Prophecy
Amerzone

It's hard to pick just 15. And hard to choose which won't be included, like the Journeyman Project games, Toonstruck, Timelapse, Amerzone, Discworld, Ripper, Tex Murphy, etc. are also so good. (I'm not sure how well Tex Murphy, Ripper, and Toonstruck work on XP though, or this list might look a little different).

I'm assuming all of these will work on a modern XP computer, either with an emulator or au naturel.
In alphabetical order -

Beyond Atlantis (aka Atlantis II)
Day of the Tentacle
Gabriel Knight 1: Sins of the Fathers
Gabriel Knight 2: The Beast Within
Gabriel Knight 3: Blood of the Sacred...
Grim Fandango
The Longest Journey
Morpheus
Myst (or Myst Masterpiece or RealMyst)
Myst III: Exile
Obsidian
Sanitarium
Secret of Monkey Island
Shivers
Siberia 1

You can tell I like both puzzle types and story types.

I'm afraid my list is a little short.. But.. here goes!

Syberia
Syberia 2
Nancy Drew: Secret of the Scarlet Hand
Nancy Drew: Treasure in a Royal Tower
Nancy Drew: Stay Tuned for Danger
Nancy Drew: Message in a Haunted Mansion
Nancy Drew: The Final Scene
Amerzone
Post Mortem
ZanZarah
Dark Fall
A Nick Bounty mini-mystery: Case of the Crabs (online free mini-adventure)
Pandora's Box
Road to India

I guess it wasn't that short after all!

Myst
Riven
Full Throttle
Morpheus
Amber: Journeys Beyond
Grim Fandango
The Neverhood
Myst 3
Tex Murphy: Overseer
Zork Nemesis
Byzantine: The Betrayal
Riddle of the Sphinx
Bad Mojo
Longest Journey
Uru: Ages Beyond Myst

No particular order.
1 The Longest Journey
2 Gabriel Knight 1
3 Gabriel Knight 2
4 Gabriel Knight 3
5 Broken Sword 1
6 Broken Sword 2
7 Syberia 1
8 Syberia 2
9 Jack the Ripper
10 Ripper
11 Dark Fall
12 Sanitarium
13 Blackstone Chronicles
14 Darkside of the Moon
15 Grim Fandango

Here's my list, in no particular order:

Sanitarium
Gabriel Knight 3 Blood of the Sacred/Damned
Syberia
Syberia 2
Black Mirror
The Omega Stone
Myst 3 Exile
The Longest Journey
Auryn Quest
Dark Fall
Post Mortem
The Cult (online free download)
Mysterious Journey 2
Journey to the Center of the Earth
Riddle of the Sphinx

Melanie

Thanks for doing this again, Flotsam!

Oh boy! It is TOUGH to cut this to just 15

Okay, cutting to games that are probably still available and run on modern computers...

Hi

A very difficult to choose fifteen only from me would be :

Monkey Island 1
Monkey Island 2
Broken sword 1
Broken Sword 2
Gabriel Knight 1
Gabriel knight 2
Discworld 1
Simon the Sorcerer 1
Under a Killing Moon
Bladerunner
Return to Zork
Journeyman Project 3
Runaway
Indiana Jones and Fate of Atlantis
Sherlock Holmes Case of Rose Tattoo

But thanks for the opportunity, and for you being so generous yet again, flotsam

Cheers.

Mad

Would Blood Rayne be an adventure game or RPG?

It had action and was an adventure you went everywhere.

Blood Rayne is certainly not an adventure game.

Then since my question was answered here is my list.

1) Arther's Knight's
2) GK 1: Sin's Of The Father
3) GK 2: The Beast Within
4) Dracula The Last Sanctuary
5) Blackstone Chronicles
6) Sanitaium
7) Black Dahlia
8) The Forgotten
9) Phantasmagoria
10) Phantasmagoria 2 A Puzzle Of Flesh
11) Tex Murphy: Under A Killing Moon
12) Tex Murphy: The Pandora Directive
13) Tex Murphy: Overseer
14) Faust
15) Realms of the Haunting

Josie