Avatar: The Last Airbender – Appa’s Lost Days

“Appa’s Lost Days,” answers the question raised at the end of “The Tales of Ba Singe Se,” could you create a full length episode from the “Tale of Momo.”  The answer is a redeeming affirmative.  “Appa’s Lost Days,” however, does a lot more than simply tell a story from our favorite air bison’s perspective.  Instead,…