With certain songs, I hear them and I just enjoy the music. Others call up memories of a tv show or movie where the song was playing. Yesterday I walked into the kitchen and on the radio was playing Wild Cherry's "Play That Funky Music". Immediately the scene of Stifler, Mulder, and Orlando Jones riding in a jeep in Evolution flashed in my mind.
What song does the same for you?
Two other big ones for me are Biggie's "Hypnotize" (Ten Things I Hate About You, Julia Stiles dancing on the table) and The Verve's "Bittersweet Symphony" (Cruel Intentions, the end of the funeral)