For the rest of 2009, we'll be counting down the year's most popular quizzes in the Lunchtime Quiz slot. Then each day at 5pm, one of our regular quizmasters will be sharing his or her favorite quiz from 2009 (provided that quiz wasn't on the Top 10). Here's one I particularly enjoyed.

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Doogie Howser has been jokingly referred to as the world's first blogger. But the kid doctor's quasi-poignant, ellipsis-laden insights more closely resemble Twitter updates. Can you tell the difference between something I excerpted from Doogie Howser's famous journal and something I found on Twitter?

Take the Quiz: Doogie Howser's Diary or Random Twitter Update?

[When you're done, either start following mental_floss on Twitter or go watch all four seasons of Doogie Howser, M.D. for free on Hulu.]