Because there was no way I could resist breaking the rule about only naming one song....here are some others besides Wonderland, that meant a lot to me at different times in that decade or are just so good, in no particular order:
Chariots of Fire- Vangelis
How Soon is Now- the Smiths
Brilliant Disguise- Springsteen
Cath- The Bluebells
Rain in the Summertime- The Alarm
Heaven Knows I'm Miserable Now- The Smiths
Chance- Big Country
Fisherman's Blues- The Waterboys
Theme from Harry's Game- Clannad
One Step Up-- Springsteen
Welcome to the Terrordome-- Public Enemy
Bring the Noise- Public Enemy
Only the Lonely- the Motels
One Small Day- Ultravox
America- Neil Diamond
Just a Shadow- Big Country
I will Follow- U2
Relax- Frankie Goes to Holloywood
Roulette- Springsteen
I know I am leaving off so many catchy songs that take me back to that period. ex Come on Eileen- Dexys Midnight Runners
(we will ignore my Air Supply phase in 7th grade)