I'll kick us off with an absolute banger...
Boyzone - Love Me For A Reason
I was like 6. I wanted it desperately. Listening back to it now, as a 36 year old man I can admit that it's an absolutely horrible bit of music....but it still takes me back to being a young kid.
I was 11 or 12 before becoming interested in music independently of whatever other people put on, but my best friend thought I'd like The Darkness so I bought Permission to Land with my birthday money.
Still a fantastic album, Black Shuck and Love on the Rocks still make regular appearances in my listening.