If you're addicted to Alexa data, Alexaholic is just what you've been looking for.
Alexaholic allows you to create customizeable Alexa graphs comparing up to 5 websites, and even allows you to paste the code for the graph on your site. Create your own here. One thing I'm a little disappointed by... you can't resize the graphs to fit your site. That's why I didn't put an example directly on the page here.
If you aren't using Alexa to look at competitive site data such as relative traffic, average page views, etc... you should be. It's a great free tool, particularly if you do anything in an attempt to map out a competitive landscape for your own company or your clients. Of course, you have to take the data with a grain of salt, because all the data is coming from the folks that have downloaded and installed the Alexa toolbar.
Link via TechCrunch.