Season 6 Episode 6

“The Extract Obliteration” - Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college.
“The Extract Obliteration”

1. “The Extract Obliteration”

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.
Raise the roof

2. Raise the roof

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.
Nanny Nanny Boo Boo

3. Nanny Nanny Boo Boo

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.
What's the word, hummingbird?

4. What's the word, hummingbird?

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.
Penny, Bernadette and Amy

5. Penny, Bernadette and Amy

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.
Surprise!

6. Surprise!

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.
Couples quarrel

7. Couples quarrel

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.
Ready, set, GO!

8. Ready, set, GO!

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.
Your average evening

9. Your average evening

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.
A romantic lunch

10. A romantic lunch

Sheldon’s relationship with Stephen Hawking is threatened over a game of “Words with Friends,” and Penny secretly enrolls in a class at the local college. Photo: Michael Yarish/Warner Bros. ©2012 Warner Bros. Television. All Rights Reserved.