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"Buzz Aldrin is to make a cameo appearance on The Big Bang Theory. The famed astronaut will appear in the CBS sitcom&amp;#039;s October 25 episode, titled &amp;#039;The Holographic Excitation&amp;#039;, according to TVLine.   In the instalment, the gang get together for a costume party to celebrate Halloween at Stuart (Kevin Sussman)&amp;#039;s comic book shop. 82-year-old Aldrin - the second human being to set foot on the Moon, following the late Neil Armstrong - has previously appeared in episodes of 30 Rock, Numb3rs and animated series Futurama. He also competed in the 2010 season of Dancing with the Stars. Earlier this year, physicist Stephen Hawking also played himself in an episode of The Big Bang Theory, sharing scenes with star Jim Parsons (Sheldon). The Big Bang Theory returned to CBS on September 27, attracting 15.66 million viewers. In the UK, the show airs on Channel 4 and E4. &amp;gt; Big Bang Theory&amp;#039;s Kaley Cuoco to host People&amp;#039;s Choice Awards &amp;gt; Big Bang Theory Kunal Nayyar wants Lisa Kudrow, Betty White cameos Watch the cast of The Big Bang Theory talk to Digital Spy below:  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/the-big-bang-theory/news/a429529/buzz-aldrin-to-make-big-bang-theory-cameo/>