Blues recommendations anyone?


Hi everybody. I'm looking to expand my music library a little bit, and one genre that I don't have is Blues. I have a buddy at work that plays Blues on his boombox regularly and I've gotten a few names from him, but I was wondering if any of you have a favorite Blues artist or cd that you could highly recommend.
Thanks a bunch.
mjfvashon
robert randolph,johnny winter,jimmie lafave,buddy guy,rl burnside,john hammond. keb mo, jimmie vaughan. check out robert johnson, son house,muddy waters, john lee hooker,bb king, stevie ray vaughan and john mayall for perspective.
I knew I could count on getting some good responses and I'm sure there'll be more before the day is done. Many thanks to each and every one that has or will respond. I've hit the mother lode for sure. That's what I was hoping for and you folks certainly did not disappoint. Thanks again everybody!
Robert Cray and Etta James are 2 of my favorites. Kelly Joe Phelps is pretty good stuff too, more acoustic type. His CD "Tap the Red Cane Whirlwind" is great.
Just a quick update. I've printed out the responses so far so I have a list to work from, and I just ordered some cd's to get me started. They are:
"Lady Day", The Best Of Billie Holiday.
"His Best" by Sonny Boy Williamson.
"The Complete Recordings" by Robert Johnson.
"The Complete Blind Willie Johnson".
"Complete Recorded Works of Son House & The Great Delta Blues Singers".
"His Best 1947-1955" by Muddy Waters.
What do you think?...will these get me off to a good start? I'm thinking so!
Thanks again to everyone!
Cheers!
As stated above there are LOTS of sub-genras in blues.
I love the Lomax/Library of Congress recordings that were done on wax cylinders. Terrible sound quality but great music.
Delta blues and Country blues are my speed.
Early Chicago blues is great too.
There are quite a few current artists at CDBaby.com that are wonderful too.
Fas Posum Records has three samplers that are cheap and have some awesome songs.
I glanced at the PBS box set soundtrack from the Scorsese documentary and it looked like a good place to start.

Good luck!