When you paste text into almost any Windows program, you get both text and formatting. But more often than not, all you really want is text.
Steve Miller's PureText gives you that option. Once you have this little freebie running in the background, you can strip all formatting out of the clipboard's text and insert it into your current application by simply pressing a user-defined hotkey. I recommend sticking with the default, -V, because it's close to the -V standard for regular pasting.