What is your "must have" Complete TV Series' (plural)?
I own all of the volumes of Aqua Teen Hunger Force, and my Dad bought me the Monty Python's Flying Circus box set (http://deals.woot.com/deals/details/25e4187c-0343-439b-bba5-4036e781df17/the-complete-monty-pythons-flying-circus#7) for my birthday back in August... I also have the complete series of Space Above and Beyond.
But, even though it's only 3 discs, I might have to say my favorite is the box set of the anime series Trigun. I'm super-pumped for the movie release!
What about you?