What better way to follow up our poll for favorite rising star than biggest trainwreck? From DUIs to rehab to prison time, 2007 was far from being the best year for this list of celebs. A few have started to clean up, giving us hope for 2008 but that doesn't mean we've forgotten about their antics from the beginning of the year. So tell us — who is the biggest trainwreck of 2007?
Don't forget to vote on all of our Best of 2007 polls!