The little heart symbol for this one was added solely on the basis of the final cartoon in this compilation by Eduard Nazarov, which is pure quality (and also the only one of his filmography that is directly set to a song, I think. His 1980s films have no off-screen music at all). The first cartoon by Leonid Kayukov, about a mean kid who ends up meeting someone he can't handle and then feels ashamed, has an art style transparently set up to appeal to little kids, and its blunt moralizing doesn't do much for me. The second film, also by Kayukov, about the clown, is pretty harmless and very short.
The film by Nazarov has excellent character design and animation, good music, and a really funny premise. Actually, it was pretty hard to translate the two opposite-words and make them rhyme in English. "delightful" and "frightful" come pretty close, but really the meanings are something like "excellent/lovely" and "awful".