That is an interesting question...my list would probably change but if I had to choose right now it would be
1. J.J. Fad - Supersonic: Most likely the first rap song I listen to that I really liked and learned all the lyrics for. Plus it was one of my early "tape it off the radio" songs.
2. Dance Hall Crashers - Lost Again: This was the song I listened to in college after my last class of the week. I had a rough semester and at the time this was my favorite song, so I would only listen to it after my last class as something to look forward to.
3. Nirvana - Smells Like Teen Spirit: This song came out when I think I was in middle school and it was so different from what I listened to at that point. Wasn't a big fan of Nirvana, but damn I loved that song
4. USC Trojan Marching Band - Conquest: 5th grade Chris was in his first year of band and I watched a USC game and their band always played this and Fight On. At that point I wanted to go to USC and play Conquest.
5. Bread - Baby I'm-A Want You: This song reminds me of when I was a little kid on lazy weekends when my pops would listen to music I would sit and play with my toys
6. Charlie Parker - Kim: When I first listened to this song when I went to Drum Major Camp in high school (pre band camp for the Drum Majors in training), one of the guys I knew played this and my reaction was "HOLY SH*T". I bought the CD and I always turned up the volume on my Discman for this song (I still turn the volume up on my iPod when it comes around)