Playphrase.me - type something, find clips from film and tv of people saying it!
Melobytes - Turn any text into song
Yarn.co - find clips from various movies and TV shows, share and combine them
Morbotron - Find your favorite Futurama scenes and quotes
Clash.me - Create audio mashups from popular soundbites.
Comb.io - find clips from your favorite shows via quotes and text