Not all sounds are free. Here is a list of sounds you've heard, that you might not have realized are actually trademarked. They are:
1. The Mockingjay whistle from "TheHunger Games".
2. The two-note "gong" on "Law & Order".
3. Homer Simpson's "D'oh!"
4. Darth Vader's breathing in "Star Wars".
5. Oh, and the sound of lightsabers, too.
6. Tarzan's yell . . . as heard in the 1932 movie, "Tarzan the Ape Man".
7. The Aflacduck's quack.
8. AOL's "You've Got Mail" greeting.
9. The Pillsbury Doughboy's giggle. (Did you know his official name is actually Poppin' Fresh?)
10. The ticking stopwatch from"60 Minutes".
Check out more HERE.