Buffy the Vampire Slayer, the TV series. I’d need to revise though, 144 episodes.
That would be one of mine also, currently working through a rewatch of BtVS and Angel myself. With a bit of revision I could probably field the collected Whedon works.
Hitch-Hiker’s Guide to the Galaxy would probably be my first choice (books 1-4 anyway). This popped up on that Million Dollar Question TV show a while back, I got more right than the contestant did.
Red Dwarf perhaps, first half-dozen series anyway. The rest after a few rewatches.
I kinda know a bit about computers, but I can’t fathom how to frame that as a Mastermind subject.