Those are all outstanding choices.
I would say Champagne Supernova for Oasis; it's simple, but I rather like the chord progression and it's the only one of their songs that I can listen to if I happen across it.
What's the deal with "Teenage Kicks" not being on the John Peel tribute cds? What goon decided its inclusion would be too passé?

Surf Wax America-Weezer (yeah, I know, thier first two albums didn't suck but were they great?)

Disposible Teens-Marylin Manson

Hips dont lie by Shakira! that song is catchy as fuck!

thank u by alanis morrissette (ok, she's not a band but so what?)

Shakira's albums are fucking great I swear. Don't get fooled by the image, she's a great songstress.

Thinking Of You - Sister Sledge

Glice is wrong.
For at least 5 albums (certainly up to and including the LP that included "The Killing Moon"), Echo and the Bunnymen were one of the great bands of their time.
Cock.

Coldplay - Clocks.

Not a Coldplay fan, but this is a great song.

The Purple Bottle, Animal Collective
Everything's Not Lost, Coldplay
Champagne Supernova, Oasis
Kung Fu, Ash
Legal Man, Belle and Sebastian
Glycerine, Bush
Lightning Crashes, Live