Protein shakes/drinks

Do you guys drink any before or after doing heavy or intense workouts? I buy all-natural Whey protein and just stay away from anything slightly artificial, and try to drink a glass a day or so before and after I work out. I know it's not a muscle-building enhancer or anything, but it helps your muscle restore nutrients after working out a lot, so that's why I drink protein shakes. Personally, it's not bad if I don't have enough protein in my body in a day, especially if I am missing / skipping meals or something. But I can't imagine substituting actual food for protein shakes all the time.

Do you guys drink any protein shakes? Also, what specific brands do you avoid or enjoy?