So far My list looks like this: (may be subject to change at a later date)
Breckenridge
Keystone
Winterpark
Mary Jane (we are counting sisters as two right??)
Jackson Hole
Silverton
Durango-Purgatory
A-basin
Vail
Copper
Wolf Laurel (NC)
Beech Mountain (NC)
Actually thats more than I thought. Im kind of impressed with myself.