Potential trip to Canada ideas

So my parents and I are trying to plan what will essentially be our last real trip together before I move on and they move apart. We considered an Alaskan cruise, but I preferred the idea of seeing the Canadian Rockies; preferably by train. (Our last train trip didn't end so well, what with someone jumping in front of it to commit suicide on my birthday). Basically, we are planning to fly into Calgary and stay there for X number of days (to be determined based on how much there is to do in the area), then take the train over to Vancouver and stay a night there before flying back.

Seeing as we have several Canadians here at SP, I thought I'd ask if anyone had any particular recommendations for someone who's only seen an eastern portion of the nation.


P.S. Personally paying near 2k for this myself, so I want it to be worth it.