a) brilliant thread titling. That's sure to draw in the experts who have little time. wtf man?
b) I assume you're using some sort of application? It would help to have some rudimentary info, like WHICH PROGRAM? Which version?
c) WHICH OS X VERSION?
ASSUMING that you're using iMovie, does the movie project show up under the File menu in recent projects?
Do you remember where you saved it? Can you find the project file in the Finder?
ASSUMING that you're using 10.4 Tiger, have you tried using Spotlight to search for the project file?