The following bands are my choice picks as of right now.
Some are older bands that never fade, others are bands that blow my mind in the last few years.
Click their link for further information.

...Gotta Jam...

Grateful Dead
Ben Harper
God Street Wine
Donna The Buffalo
Ekoostik Hookah
Gov't Mule
Shakedown Street Band
Doobie Brothers
Agents Of Good Roots
Widespread Panic
Crazy Fingers
Blues Traveler
Jefferson Airplane
John McCutcheon
Mickey Hart, Planet Drum
Red House Painters
The Reptile Palace Orchestra
  Zen Tricksters
Cravin' Melon
Bob Dylan
Dark Star Orchestra
String Cheese Incident
Ziggy Marley & the Melody Makers
Cowboy Mouth
The Big WU
Bob Marley
Neil Young
Jazz is Dead
Little Feat
Allman Brothers Band
Rat Dog
Eddie From Ohio
Uncle John's Band
John Lee Hooker

...Female Artists...

Folk Diva Label

Beth Orton
Patsy Cline
Ani DiFranco
Suzanne Vega
Loretta Lynn
Sinead O'Connor
Macy Gray
Electric Angel
Zola Moon
Loreena Mckennit
Tori Amos


Jelly's Pierced Tattoo
The Original Brothers And Sisters Of Love
Scott Campbell Group
Daniels Crossing
Audrey Becker
Knee Deep Shag
Adam Druckman
Fathers of the Id
Maggie McCabe
Steppn' In It
Brian Lillie & the Squirrel Mountain Orchestra