Wal-Mart is a good place to shop, as is Meijer. I've even found a lot of good work clothes at Good Will. I don't shop for clothes very often but when I do, I can spend as much time in the store as I would if I were looking at games or books.
Old Navy for me since its so easy to shop there and I find shopping for clothes to be annoying just like taking out the trash since its one you know your ganna have to do it eventually.