Perhaps "shame" isn't quite the right word, but it'll do.
Some of the films here will never go away (I couldn't care less about the MCU, for example), but the others, when and if I watch them, will be replaced with the next most popular title I haven't seen from that year. Those lucky titles that I've gotten around to watching can be found here.
Rules: No shorts, no live shows.
Curious about what the flip side looks like? My List of Obscurity documents the least popular films I've seen across the years.