The ABC Saturday Superstar Movie

Daffy Duck and Porky Pig Meet the Groovie Goolies (1x15)

:

The Groovie Goolies help Daffy, Porky and the other Looney Tunes to solve a spooky mystery (in the style of Scooby-Doo Where Are You!). Mostly animated, but includes a live-action segment.