Liking Red Dwarf doesn't make someone a geek.
I've said "I feel unusual" (Withnail & I) if I am. I once told someone about some shop or other that had long since closed and added, Marty Di Bergi style, "Don't look for it, it's not there anymore" (Spinal Tap) but they didn't click. In Seinfeld there was a bloke who berated someone for "double-dipping" a chip and said in a really tense, wired way "When you take a chip, just take one dip and END it!" My brother and I cracked up at that and adapted it for occasions when someone's repeatedly doing something - "Just do it once and then END IT!"
Talking of Die Hard as someone was, if I can't find something I'll say "Where are my... whatever" in the style of Hans Gruber and his "Where are my detonators".