Rock and Roll.
I grew up in a house that listened to Country Western Music with the odd bit of Mexican music when Mom pulled out her records. It was not a very musically varied place when you had access to a few radio stations and pretty much nothing on TV (MTV didn't come out until I was in High School and I didn't get cable until my 3rd year of college). I still like C&W, there is a lot of good music in that genre. But it was The Monkees and The Banana Splits that introduced me to Rock and Roll. Mind you it was a very fluffy, family friendly type of rock, but it still wasn't what I was used to listening to. It was the gateway drug for a 10 year old chick from the country to expanding her horizons music-wise. I still like The Monkees and have several of their song on my iPod. I may have to hunt down Davy's last album (came out in 2009) to see if his music ever matured or if he just stuck to what he knew he was good at.
So, Good-bye, Davy Jones! You made me a Believer