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Episode Details

On The Big Bang Theory Season 9 Episode 17, Sheldon gets a surprise guest when the gang celebrate his birthday. Adam West guest stars in this episode.

Rating: 2.8 / 5.0 (173 Votes)
The Big Bang Theory
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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.