Some of our favorite stars go above and beyond a regular work ethic, and this year brought another batch of stars who barely had time to sleep. From side projects, to clothing lines, to parenthood, this group seems to do it all. So tell us — who is the hardest working celebrity of 2008?

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I voted Madonna...and honestly AT LEAST THREE of the people on this list shouldn't, couldn't and wouldn't be described as celebrities if it wasn't for gossip blogs and media sensation, here's looking at you Lauren Conrad, Ryan Seacrest and Jessica Simpson.
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