Im a big fan of lucas arts games but i would have to say the monkey island series rocked :D

Here too. :w00t: :D :kosta: :ok: :Brain: :wub: :bannana: :band: :drool: :max: :king: :beer: :karate: :whip: :guitar: :party: :drunk: :apple:

Loom. Someone handed me a copy of it, then I bought it as I was unable of going trough the twister (demo mode or something similar), then I bought it a second time as some floppy broke and I could not wait for anybody to replace it and continue playing. :D

Adventures:

1. Monkey Island (Ron Gilbert & Tim Schafer)
2. LOOM (Brian Moriarty)
3. Maniac Mansion (Ron Gilbert)
4. Full Throttle (Tim Schafer)
5. Grim Fandango (Tim Schafer)

Other LucasArts games:
1. Dark Forces (Daron Stinnett)
2. Outlaws (Daron Stinnett)
3. Jedi Knight (Justin Chin)

Loom - the music and originality won it for me
Monkey Island 1
Maniac Mansion
Their Finest Hour

EDIT- I've played a demo of Fahrenheit on the PC, it looks really really good and I shall be adding it to my collection in the near future. Quite an original concept

Their Finest Hour: Battle of Britain
Full Throttle

For me it is:

- X-Wing
- TIE-Fighter
- Dark Forces
- Dark Forces 2: Jedi Knight

I must say though, that X-Wing and TIE-Fighter have stood the test of time much more then the Dark Forces series.

Well, as everybody is saying a lot of games, I should say that I also love the first two Monkey Island games.