My wife is like this, it is like a personal IMDB or Amazon x-ray with any show we watch together. I love it and it fascinates me that her brain can make those connections.
I’m glad to hear some people enjoy it. I do it (but I certainly don’t know any of their names - I’m just really really good with voices, so big costume or being animated don’t stop me - and I’ve always assumed it’s probably super annoying.
It just recently hit me out of the blue that Ellen Tigh from BSG is the same actress as one of the vampires in Kindred the Embraced, a show that I only ever saw one episode of.
After watching John Wick 4 it kept bothering me to no end where I knew that German Clan leader from. It kept rattling in my head during the drive home to the point where I considered, stopping somewhere and googling it. I decided to let it go and google it when I'm home. 5 minutes later my mind screams: Tonks! Nymphadora Tonks!