I had been "fixing" my fish-eye lens shots using the lense correction in Photoshop. Several of the photos from were taken with a 8mm fish-eye and adjusted manually. I found this cool plug-in here that does it automatically. Here's a classic fish-eye effect - my badgie in his burrow - where I used the fisheye lense for effect.

And then below after the correction.  Trying to do that manually with the lens and perspective correction took me ten minutes. It's not prefect but it cuts out about 3/4 of the work. A little tuning gets rid of the remaining curvature and on scenery it works well the first pass without cropping.