Convoluted References You Appreciate

Growing up in a house full of movie and trivia buffs we were always very into clever cross-referencing. Pre-internet, this required things like a lot of watching movie credits on slow-forward. You could score a lot of "cool points" if you recognized a minor character in the background of something and knew where you knew them from. We were also a puzzle-happy household, so that added to our sense of a good time. I was wondering if other people get so into convoluted references.

Here's one example:

So there's an episode of Num3rs which includes 2 relevant characters, one played by Joseph Gordon-Levitt, and the other by Bruce Davison. At some point my sister answered a question about this episode by describing a character as "Mr. Alex Mack." This was hilariously ambiguous if you are just the same age we are.

The Secret World of Alex Mack was a TV show in which Larisa Oleynik had the superpower of turning into liquid and running around through drains. In the X-Men films Bruce Davison plays Senator Kelly who ends up with similar melty powers, so he could be "Mr. Alex Mack." But, in 10 Things I Hate About You, Joseph Gordon-Levitt plays Larisa Oleynik's love interest, so HE could be "Mr. Alex Mack." I don't even remember which one she actually meant but it was a lot of fun.