I know a lot of you wouldn't care but i thought I'd point out some nice looking adventure games on the source engine from valve...
They are displayed @ planethalflife.com
http://www.forumplanet.com/planethalflife/topic.asp?fid=2348id=1907501
A link for people to find them.
While there are flaws in both games, I'm mostly just happy that people are using the source engine for more than multiplayer first person shooters.
Granted they were made for school projects but hopefully it inspires people!