who are these grammy people

http://www.cnn.com/2008/SHOWBIZ/Music/02/10/grammy.winners/index.html

If anyone knows who the hell most of these people are and why they get awards for the crap that populates the airwaves, please let me know. I've heard of Herbie (though knowing there was an album out this year, not so much). And two or three of the other winners have produced some actual music of which I'm familiar. I have no idea who this Winehouse person is, though apparently it's mildly ironic that a song entitled rehab was produced by a person who escaped from it. Or whatever that is when they let famous people out of rehab for no apparent reason.