Many old fangames have been shut down after cease and desist letters from LucasArts' legal department. These titles are very hard to track down. I remember "Fate of Monkey Island", which you can read about here:
http://scurvy.adventuredevelopers.com/about.html
And I also remember a fan game made by Jenny Hannula (
http://www.jennula.com/) which also disappeared. I believe it was called The Treasure of Drunk Island.
Good times.