15 TV Shows You Won’t Believe First Aired 15 Years Ago

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1999 was a great year for television. It gave us some hit staples that are still on the air today — like Law & Order: Special Victims Unit — but some of the shows that debuted in the last year of the 20th century introduced us to some of the biggest stars today.

For instance, James Franco, Seth Rogen, Jason Segel, and many more starred on the short-lived but critically acclaimed drama Freaks and Geeks, which began it's one season run in 1999. In addition to that, we were introduced to Shia LaBeouf as Louis Stevens on the Disney Channel show Even Stevens that same year.

To see other shows you won't believe first aired 15 years ago, click through the gallery below!