I always want to know the year something came out

Any time I watch a movie/TV show or listen to a song, I almost always am curious as to what year it came out and either look at the guide on the TV or look it up online.

I also like finding out what year certain buildings in my town were built (it drives me nuts if I can't guess a general timeframe by looking at the architecture and design, which is hard for buildings that have been around awhile and have been extensively remodeled), what year a specific car is (to a lesser degree), and what year or general era certain things were made.

I also like knowing what general era certain trends were popular, especially when it comes to stuff like architecture and interior design. In fact, I was doing some work inside a house the other day, and it was driving me nuts that I couldn't remember roughly what era that style of cabinet was from.