From 'Twilight' to the 'Dark Knight,' the year in entertainment

• Story Highlights
• Heath Ledger, Tina Fey, Robert Downey Jr. made an impact during 2008
  
• Coverage of the presidential election and the Olympics attracted wide audiences
  
• It was also the year of "Twilight," "Wall-E" and auto-tune
  
• iReport.com: Your picks for 2008's top entertainment stories
  
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