When we went to Purgatory in February I was amazed at how many people I saw out road biking. Of course, it was warm and the snow sucked so I'm sure that contributed to people being out riding.
@martyg, it was our first trip there and it was easy to see how awesome it would be with snow. Unfortunately, we skied on little snow on a few runs but the resort did an amazing job with what they had to work with. Sadly, we were there the week before the one big snow week of the year.