I use Adobe Lightroom 3 to (a) organize all my photos and (b) to perform most of the post processing on my photos. Since using Lightroom I hardly have to utilize any other program to perform the post processing, it is just so damn powerful. Of course you can not do everything with it, but adjusting colors, cropping, straightening and even some pretty advanced effects, like tilt-shift, can be achieved within the Develop (keyboard shortcut ‘D’) mode.
When editing a set of files you might want to perform the same adjustments to each individual photo. This can be quite an hassle if you make many modifications. Luckily Lightroom 3 allows you to copy the individual settings you made to one photo over to any other you choose. This is done via the menu Photo > Develop Settings > Copy Settings (keyboard shortcut Shift – Cmd – C) on the photo where you already performed your modifications and then via the same menu, only then Paste Settings (Shift – Cmd – V) on the photo you wish to have the same modifications.
Exploring these types of handy features saves a lot of time on processing your photos and is a worthwhile effort to stroll through the Adobe help files.