Stuff I Use: YouControl

There's a great menubar program for mac called YouControl ($30, free 30 day demo), and among many other useful features, there is a pasteboard that creates a menubar menu which allows you to see and select any of the past 5, 10, or however many past clipboard entries you've copied.  After you have selected the one you want to paste, there is another menu that pops out that gives the date, time, and application you copied from, and gives you the option to paste in the style it was copied in, or to paste with unformatted text. This is infinitely useful for me because it not only allows me to paste things that have been written over in the current clipboard, but also allows me to paste following the same style I'm already using in a document without having to reformat the style.

The program is a bit resource hungry, and at a price of $30 this may not be the most elegant solution if you only get the pasteboard out of it. However, the other functions of the program are very useful - the ones I use include an iTunes controller, weather forcast, address book, and an enhanced date/time in the menubar.