In your experience, which vegetable varieties do well in Denver?

I have gardened here in Denver for four years, and I have found that some things grow well . . . and others don't.

What vegetable varieties have you found to be dependable along the front range? And where did you by them from? (Just because the seeds two companies sell have the same name, does not mean that they are the same!) I am especially interested in actual Denver Metro experience.

To start the list;
Wayahead tomato (from my grandparents)
Green Grape tomato (Baker Creek Heirloom Seeds)
Black Cherry, Taxi, and black plum tomatoes (from another relative)
Costata Romanesca zucchini and Gill's Golden Pippin acorn squash (Sand Hill Preservation Center)


I have had other successes, but I don't have my records handy right now.