[HaroldO]

Nice iniative. Top of my mind:

Sherlock Holmes - Mystery of the Mummy
Developer: Frogwares
Publisher: Focus Home Interactive
US Release: Released

Last Window (japanese title)
Developer: Cing
Publisher: --probably NOA--
US Release: we hope so

Also, I agree with M-E on Dementium.

EDIT: Also there are certain games I've seen on stores that look like adventures but I've never played any of them to tell, like:

CSI: Deadly Intent - Hidden Cases
CSI: Dark Motives
Cate West: The Vanishing Files
Nancy Drew: Hidden Staircase
Nancy Drew: The Deadly Secret of Olde World Park
Nancy Drew: The Mystery of the Clue Bender Society