Snoopy Meets The Smurfs

It's The Smurfs, Charlie Brown! is a prime-time animated crossover TV special based upon the popular comic strip Peanuts, by Charles M. Schulz and the Belgian comic book series, The Smurfs by Peyo. It aired on the CBS network on November 12, 1990. The special was produced at Mendelson/Melendez, in collaboration with Hanna-Barbera and one of the first Peanuts specials to be animated overseas. Unlike the later seasons, The Smurfs are set in their Season 2 timeline.

Trivia

 * Johan and Peewit were originally intended to appear in this special, but they were cut for time.
 * Larry Leichliter and the other animators (not counting Bill Littlejohn) did the posing for the Peanuts characters, due to the animation being outsourced to Asia. Leichliter even directed the animation, along with the other H-B animation directors.
 * Snoopy and Woodstock are able to interact with Gargamel and Azrael, whereas the Peanuts gang do not get to meet the villians themselves.