3. Jays Peak
4. Mt. Hood
5. Big Sky
In terms of mountains I've ridden...I've been fortunate enough to hit up some of the bigger names. Here is my list, but some of it skewed by my ability level at the time of going.
1. Whistler (most acreage and was not crowded when I went)
2. Jackson Hole (gnarly terrain. I learned at JH by taking group classes and it kicked my ass)
4. Park City
10. Hunter Mtn.
11. Sugar Mountain in NC