LillithLillith has trained with dozens of teachers all over the U.S., mainly in California, St. Louis, Boston, and New York. Here are some links to my most repsected influences as a belly dancer:

Jehan Kamal, NY
Rachel Brice, CA
Suhaila Salimpour, CA
Sabrina, MA
Simone's Seventh Veil, MO
Daughters of Rhea, MA
Bahijha, MA

People I've personally worked with/recommend:

Belly Dance in New England
Ultra Gypsy
Fat Chance Belly Dance
San Diego Area Middle Eastern Dance Association
Indirani

Yoga:

Back Bay Yoga
Underground Parlour
One Yoga

Other links:
www.DondiBellyDancer.com
www.shira.net