Anyway, the way it works so often for me is that one thing often leads to another. A few of you posted your favorite shortcuts. I love the tip from Daniel who offered, "To toggle between a Before and After view of the image I love the backslash \ shortcut in the develop module in LR. And to switch on/off the highlight warning use the J shortcut." Thanks Daniel - good tip.
Also, how do you jump from one module to another with Ctl-Alt-1,2,3,4,5 of course. OK, enough of my ramblings - where can you find the best list of Lightroom shortcuts in the whole wide world that includes everything? Glad you asked - here is the link to my favorite Lightroom shortcut listings right here. It's PDF so go get it and print it out for yourselves. Memorize it, post it in the bedroom, bathroom, kitchen, dining room, and next to your computer. Before you know it - you'll be the shortcut king/queen.