The GoGo's - We Got The Beat / Our Lips are Sealed
No other song(s) take me to a hot summer day at the beach (in the 80's), than these two. I was in my teens with no worries, a beautiful girlfriend, a great car, and my entire life ahead of me. I smile everytime.
AC/DC - Back in Black
The first album that I bought with my own "earned" money. Prior to this, music was gifted to me either directly, or via gift certificates. Also the first album that turned me on to hard rock, and AC/DC in general. Oh, and it broke 3 years of constant Disco that my parents played through the family "Hi-fi".
Not the exact one, but close. 
