Not familiar with the way to properly link things in the article, so here is some information for somebody more knowledgeable to add in later.

The chorus of Janet Jackson's "Together Again" is very similar the "Bridge Zone" theme from the 8-bit (Game Gear and Master System) version of Sonic the Hedgehog. http://www.youtube.com/watch?v=S6o-vOE9auM

The "Bridge Zone" theme in turn is very similar to the theme song of Full House (the Olsen twins' first show). http://www.youtube.com/watch?v=Zx3Zo9t7c8Q#t=48s