So today I was on Sporcle.com (the second best time waster apart from Facebook) completing a quiz about ad-libbed quotes and sooo many famous quotes have been ad-libbed!
http://www.denofgeek.com/movies/432108/10_classic_adlib_and_offscript_movie_moments.html
This website has some of the most famous ones, including a really great scene from "Raiders of the Lost Ark."

Originally Indy was supposed to have a long battle with this swordsman, but Harrison Ford was suffering from food poisoning and he cut the scene short by shooting the guy. How crazy is that? Movie magic created by a bad case of diarrhea.
Another classic one is from Die Hard.
When McLane is crawling through the elevator shaft, he ad-libbs a couple lines like "Come out the coast, we'll have a couple laughs," and "now I know what a TV dinner feels like."
It's so awesome to see what creativity can accomplish. It also shows that when you let people think freely, great things are done.
So don't ever be afraid to voice your ideas!
Lyric of the day: "
And I'm ready to know what the people know Ask 'em my questions and get some answers What's a fire and why does it - what's the word? Burn? When's it my turn? Wouldn't I love love to explore that shore up above?"