Favorite Dirt Road or Trail
It's tough to think of just one but here's one for starters. On hte west side of the Alberta/BC border there's a forest road that runs north from Sparwood all the way to Elk Lakes Provincial Park. The little community of Elkford has supplies and the park is truly spectacular. You camp practically anywhere in between for free, but there are also a few BC Forest campsites and a forest cabin as well. Plus you can take the Old Telegraph Trail over the divide to Kananaskis Lakes and continue north.
How about some other nominations?