The Wild Thornberrys (found pilot of Nickelodeon animated series; 1998)
Airing twice on Nickelodeon in 1998, (once on September 1, and once more in October during Nick's Big Help-a-Thon 5), was the pilot episode for The Wild Thornberrys.
The episode involved the Thornberrys trying to acquire footage of an elusive black rhino in Kenya, in order to save their TV show from being cancelled. They end up getting the footage they need after narrowly avoiding a charging rhino, and the show is saved.
For whatever reason, this episode was not included on any DVD releases of The Wild Thornberrys, and as a result, it eventually faded into obscurity. However, on the 11th of May, 2013, YouTube user jeffdadude87 (who had previously recorded the entire Big Help-a-thon 5) kindly uploaded a bootleg copy of the episode on our request (but only for a limited time). Thanks jeff!