Watch The Big Bang Theory Online: Season 9 Episode 17

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When it's your birthday, it's kind of rude not to have a great time.

On The Big Bang Theory Season 9 Episode 17, it was Sheldon's birthday and, as you can probably guess, his friends all came together to ensure that he had a fun time. 

But did he?

Yes, he received crazy exciting gifts, but the best present is the Adam West. Yes, Adam West appeared on this hilarious episode!

Was it the best birthday on television? What else went down during the hilarious half hour?

Use the video above to watch The Big Bang Theory online to find out!

Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.

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The Big Bang Theory Season 9 Episode 17 Quotes

Penny: Wait a minute, you mention his birthday and he vanishes?
Leonard: Where's that information been this whole time?

Can we please drop this subject and pick a new one? I suggest, how thick can a soup get before it becomes a stew. The answer -- it may surprise you.

Sheldon