Light writing styles are becoming quite popular in graphic design right now. There have been several tutorials from PSDtuts on the subject and one in particular that used letters and layers. It was a looong process to go through and change each letter on 20 different layers!
Well guess what! I have a Photoshop action for you (developed by my husband, Jerrol) that will do almost the same exact thing in a matter of seconds! The only difference is that it will not change the font for you. I think it looks just as good with all the same font (sometimes even better, depending on the effect you want), but you can always go in and change it after the action creates all the layers for you.