At Bronycon this year, M. A. Larson was asked whether there was an episode idea he always wanted to write, but never had the chance to. He stated that he wanted to do an episode based on a running joke among the writers about Applejack having a rival named "Pear Steve". I like to think he would be a sweet, hippie-like character, and that Applejack's hatred toward him would be completely irrational.
Also note: I'm color-blind, so I'm fairly certain Pear Steve's colors are atrocious to look at. My apologies =P