The surreal tab in the HDR menu blasts contrast and details, leaving an end result not unlike how one would imagine a nuke blast looks. I kind of like it.
I've been sitting on this one for a little while, mostly because there were some huge power lines running through the sky that I just couldn't get rid of in old CS2, or at least delete them believably. In CS5 and the "content aware" fill as you use the "band aid" to remove them its another story. An otherwise distracting element rendering an image you want can be saved in CS5. (I should note the proper name for the band aid is "spot healing brush" with 3 other tools available in a drop down available by right click).