In the Canadian Rockies in 2008 (Kootenay National Park, I think). There had been a devastating fire some years before -- yet the undergrowth, especially, came back very lush and green. Gives me hope for our New Mexican fires....
Along the North 10K Trail a few weeks ago, right before the Sandia wilderness closed due to the extremely high risk of wildfires. I wish I could hike there -- but I imagine all the animals are really happy that the humans are gone.:)