Keep Circulating the Tapes: The complete series has been released in Europe at one point, but not the U.S.. While there was a Region 1 DVD, it only contains four select episodes. Additionally, the series is also available on Jaroo, but it's just those same four episodes. It doesn't help that they're identified as episodes "1-4", when in fact they aren't.
This is quite amusing since in many cases, releases available in America are virtually unavailable anywhere else, Gargoyles being a prime example.