personally, I love the '60's.

I love Westlife, Ronan Keating and Billy Joel. I like music with meaningful words. I was a teen in the eighties so I love eighties music as well. When I was in the eighties I liked music from the 50's and 60's. There are so many great songs out there I could go on and on.
My children are entering their teens and they like 80's music, mainly Billy Joel.

I'm In my teens and I like Evanescence, Damien Leith, and various classical music. I usually listen to SAFM or classic fm.

There are so many - it really depends on the day and mood.

When I'm feeling...

Optimistic: Solsbury Hill (Peter Gabriel)
Vaguely Evil: Sympathy for the Devil (Rolling Stones)
Really Evil: Smells Like Team Spirit (Nirvana)
or Midnight Rambler (Rolling Stones)
Like Being a Friend: Bridge Over Troubled Water (Simon and Garfunkel)
Like NOT Being a Friend: I Am a Rock (also Simon and Garfunkel - funny, that)
Like Driving Fast: Born to Run (Bruce Springsteen)
Disgusted with the US Political Scene: American Idiot (Green Day)
In a Sentimental Mood: Down Under (Men at Work)
In Love: Embraceable You (Charlie Parker)
or Lover Man (Billie Holliday or Charlie Parker)
NOT in Love: One (U2)
Like Listening to Some Damn Good Music: So What (Miles Davis Sextet)
or Jungleland (Bruce Springsteen)
Ready to Start Over: Deacon Blues (Steely Dan)
Like Playing Music Again: The Complete Works of Robert Johnson

It's spelt Salisbury, Stu - it's a hill in Wiltshire, in southern England

For me, it would have to go in a similar vein to yours, though. I have to be in a certain mood to have a favourite song. But my general favourite ten are as follows.

"Your Woman" - White Town
"And Then You Kissed Me" - Cardigans
"A Kind of Love" - Sing-Sing
"For Love" - Lush
"Stolen Hill" - Anika Moa
"Iodine" - Siobhan Donaghy
"To Your Love" - Fiona Apple
"Torn" - Natalie Imbruglia
"Election Night" - Bic Runga
"Pass This On" - The Knife

"One" by U2 is my all-time favourite, though.