I like to find old movies (in the public domain, of course) that I can edit, and supplement, and add jokes to, and turn them into fresh works of art. That is how I describe it, here is how someone else makes the case.
If you want to see examples, check out these links:
- Zeppelins vs Pterodactyls (movie serial mashup)
- “Play That Funky Music Rammstein” (DJ Cummerbund music mashup)
- Dead Men Don’t Wear Plaid (Major Movie Mashup, with Steve Martin and Humphrey Bogart–just a scene, not the whole movie)