Is there something... a sound, a smell, a film, a book, a picture, etc. that instantly evokes nostalgia?

I’m at work, and on Saturdays I can pretty much watch DVDs all day, and I was feeling like my old favorite kiddie movies, so I grabbed a bunch of them. I’m watching Disney’s The Little Mermaid, and the opening song and credits always shoves me back to when I was little, sitting in my grandfather’s worn electric reclining chair. I used to watch this constantly when I was little.

Also, the song “Forever Young” by Rod Stewart… it reminds me of a very vivid memory I have of my dad and I in Michigan in his beat-to-crap pick-up truck going to cut down a Christmas tree… it was on the radio and my dad was singing it (badly, LOL).

Is there anything that does that for you?