Depends on how well you can tolerate psychedelic European kiddie stuff. (I was responding to Takeshi55's desire to see something bad.) The voice acting by Peter Ustinov (as the doctor) is nice, though the character designs won't be everybody's cup of tea. And the music, while definitely ugly and synthesized, is in my opinion still better (for the most part, I should add) than the scores on Filmation's Tom and Jerrys.
For DFE enthusiasts like me, of course, it's notable for being DFE's only foreign production, though I heard their episodes were pretty much outsourced to Nelson Shin. (On those episodes, it can get tiring hearing the same twenty or so Hanna-Barbera SFX over and over again, with a still-substantial amount of recognisable Treg Brown and Jay Ward thrown in here and there.)