Tears For Fears (age 7)
Operation Ivy (age 12)
Ned's Atomic Dustbin (age 13)
The Pop Will Eat Itself (age 15)
Screeching Weasel (age 16)
Ramones (age 17---yes, a bit late)
Les Thugs (age 19)

Now I am 29 and listen to pretty much everything (including all of the above).

age 12 (1984) - butthole surfers

age 16 - king crimson

age 19 - public image limited

age 22 - bauhaus

age 27 - tortoise

age 29 - the fall

age 33 - low

Age 5-7 - Tortoise, Slayer, Nirvana, Korn

Age 8-12 - Cocorosie, John Coltrane, butthole surfers.

Age 12-13 - Janes Addiction, Velvet Underground, MC Hammer, Metallica.

Mine's all out of whack

5 or 6 years old - Kraftwerk's "Autobahn" was released. The radio edit single was my first purchase. WLS in Chicago, one hour from where I lived at the time, played it. It was EXCELLENT kid music and I fell in love with it.

10 - Cheap Trick and Blue Oyster Cult. Not much else. Maybe the Byrds.
Actually, I was into some prog. Loved Rush at the time, along with original Genesis, some Yes, and other bands young, budding musicians listened to at the time.

14/15 - REM, southern jangle pop, and the first "Paisley Underground" bands. Probably my biggest musical influences, though I can't stand REM now. These bands turned me on to 60's music, which I still love. I also liked a lot of synth music, like Gary Numan and Ultravox (a bit later). More Kraftwerk - Computer World was current at the time.
The Kinks, starting with the 80's skinny tie stuff, then working backwards to the best period, the mid to late 60's.

16 or 17 - Post punk. I saw ARGH! A Music War at East Carolina University. I already liked the Police, but in one night, I saw for the first time:
Gang of Four, XTC, Echo and the Bunnymen, Chelsea, etc, etc, etc.
This movie changed my life. I still watch it all the time.
Also, my friend Judd turned my on to the first Pink Floyd records.
Still loved the southern jangle bands

18 - The stuff I missed as a kid. This is where I really got to know the Beatles. That led to the "Nuggets" stuff.
Also, Post Punk, mk.II - "The 'we have these bands here???' years" - Burma, Big Black, etc.
Also, Siouxsie and any other band featuring John McGeogh, who was now very much on my radar.

20's - Space rock, shoegaze, MBV, etc., but still loving the psych pop. Early Flaming Lips were a perfect blend of the two. Some stuff from the Pacific Northwest, like everyone else. BritPop. And how I loved Pavement.

30's - Still with the 60's garage pop, and the modern versions, like The Lilys. Radiohead when OK Computer came out (then discovering the Bends, which I had ignored, due to hating Pablo Honey).
Now, pushing 40, I mainly dig back into everything that I've listed, sometimes filling in blanks, balanced equally with flavor of the month stuff.

-A

I miss the Kraftwerk, Compu-e-ter.

1972-1975: The Jackson 5/Sweet/Elton John

1976-1978: Queen/Thin Lizzy/Ted Nugent/

1979-1981: Devo

1982-1985: Black Flag/Minor Threat/Stooges

1986-1988: The Birthday Party/Nick Cave/Lou Reed/Velvets/any Delta blues

1989-1993: Rolling Stones/Allman Bros./Neil Young/Skynyrd

1994-1996: Merle Haggard/David Allan Coe/Charlie Rich

1997-present: Melanie/Bob Dylan/Dion

My musical life got off to a funny start:

From age 10-12: Talking Heads and Yello

13-14: Nirvana

15-17: Big Black and Sonic Youth

18-19: The Ex and Wire

20-21: The Stranglers

23-25: A musical dry spell after graduating from college

Now: All kinds of shit, plus the shit I liked a teenager in any order.

I was crazy about a lot of crooners when I was a kid. Like maybe up to 10 years old. The usual suspects, rat pack, Elton John. I loved Elton John. Also, Peter and the Wolf. And I had a Pointer Sisters LP that I liked, the one with "I'm So Excited." My parents were convinced I was gay.

Then lots of metal.

Then I went through a crazy hippie phase at 13, the garb and everything. Someone gave me the Doors ceedee that went with the movie (the Val Kilmer one) at the time. I distinctly remember thinking it was truly bullshit music, but the Velvet Underground song on it ("Heroin") blew my mind, so I went with the Lou Reed/Iggy/Bowie glam/heroin rock for while.

I was late to jump the Nirvana bandwagon but I really really loved them once I was aboard. 14 / 15.

Then Beefheart and from that sort of the Harry Smith compilations, weird folk music in general. 16 / 20.

Classical stuff, basically baroque music and Beethoven. 20 / 25.

And I listened to a whole bunch of La Monte Young today.

8- Led Zeppelin
11- Nirvana
15- Pelican
16- Minor Threat
17- Fugazi
18- Mono
19- The Mountain Goats

I thank my cousin for introducing me to Pelican which basically immersed me into independent music. After Pelican came many Chicago bands (Shellac, The Ponys, Chronic Seizure, Intifada, I Attack, etc. etc.) and well the rest is history as they say.

Styx (1983)
Led Zeppelin (1986)
Big Black (1987)
Fugazi (1990)
Melvins (1992)
Sleep (1995)
The Fucking Champs (1999)