One of my favorite hobbies as a kid used to be watching my parent's reaction when I told them a movie came out x number of years ago, just to watch their faces as they flashed back to the moment in time when they were sitting in that movie theater watching that movie and realizing that, while it feels like not too long ago, it actually was many more years than they realized.
My karmic justice for that is to have my younger cousins do the same thing to me, and have this XKCD comic strip rub it in my face further.
Movie Ages- XKCD
For the record, when Revenge of the Sith was released on May 19, 2005 I was 15 years old.
The real kicker was The Little Mermaid. Ouch.