If you ever do any site design and play with CSS stylesheets, you know what a pain it can be to make a change, save it, reload the browser, and repeat until you get the look you want. I found a nifty little bookmarklet that shows CSS stylesheet changes in real time as you make them. It only works in Mozilla and Netscape but its very handy. There are several other Web Development bookmarklets over at squarefree.com that look worthwhile as well.