Found this on YouTube, and it really got me laughing! It's the 100 Best Maniacal Movie Laughs. Some are creepy, some silly, some from live films some from animated features. You'll see some maniacal laughs from your favorite flicks in this video, but I couldn't help but notice that both Nicholas Cage and Bruce Willis have several entries, especially Willis as John McClain in the Die Hard flicks.
Enjoy! Bwahhahahahahah!
http://youtu.be/WaIJKM0sjdo