Pink Floyd is easy listening? I'd hardly call them that.
I do love Pink Floyd, primarily The Wall and Wish You Were Here, and Dark Side of the Moon and The Final Cut to lesser degrees, with additional songs here and there (Interstellar Overdrive, for one.) Their complexity and ingenuity never ceases to amaze me.
Ani DiFranco is awesome... I have never heard another artist/band with lyrical content that can (consistently) challenge hers, and that whole girl and her guitar vibe really pulls me in, too.
Other female singer/songwriters: Alanis Morisette, Jewel, Sheryl Crow (yeah, the staples) Aimee Mann, Nicole Blackman, Jill Sobule, Tori Amos...
Other bands: Smashing Pumpkins, The Doors, Nirvana, Blink 182 (thanks to my boyfriend), The Countintg Crows (also thanks to him), NIN (less now than in past years), Cranberries, Fuel, Green Day, Chicago...
"Love is a piano
dropped from a four story window
and you were in the wrong place
at the wrong time." -Ani DiFranco