The best of the old for me:

Heart
Fleetwood Mac
The Motels
The Eurythmics
The Pretenders
Missing Persons

For fun:
The Go Go's


For those who like to get lulled into a state of bliss and probably the most talented musically with a great voice:

Enya

Best Voice Ever:
Kate Bush

And for the slightly newer stuff not rapish:

Cheryl Crowe
Alanis Morisette

And then for the one song that I have no idea why I like:
The PussyCat Dolls

Dont you wish your girlfriend was raw like me
Dont you wish your girlfriend wore a bra like me (my lyrics added)

Dont ya.... (hit the trumpet and sax hard)