Making a Big Bang Theory cameo is practically a requirement for nerd culture icons. Our countdown includes Elon Musk, Adam West, Buzz Aldrin, and more! Which BBT cameo is YOUR favorite? Let us know in the comments!

Watch more great Big Bang Theory videos here:
Top 10 Big Bang Theory Plot Holes You Didnt Notice - https://youtu.be/axjdwp5qGI0
10 Times Penny Was the Best Character on The Big Bang Theory - https://youtu.be/quzu-Bb6q4w
Top 10 Penny & Leonard Moments on The Big Bang Theory - https://youtu.be/c6y5uu7jEhQ

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