The Big Bang Theory Lost Photos

­Check out exclusive Lost photos from Season Four of The Big Bang Theory.

Oops

1. Oops

Raj (Kunal Nayyar) wakes up in bed with Penny (Kaley Cuoco)
Sheldon Love

2. Sheldon Love

Amy Farrah Fowler (Mayim Bialik) plants a wet one on Sheldon (Jim Parsons)
The Proposal

3. The Proposal

The Gang, especially Raj (Kunal Nayyar) is surprised when Howard (Simon Helberg) proposes to Bernadette (Melissa Rauch)
Marry Me!

4. Marry Me!

Howard (Simon Helberg) proposes to Bernadette (Melissa Rauch)
Thief

5. Thief

Howard (Simon Helberg), Raj (Kunal Nayyar), Sheldon (Jim Parsons) and Leonard (Johnny Galecki)
Boys Having Fun

6. Boys Having Fun

The guys goof off on their night together.
Big Kiss

7. Big Kiss

Bernadette (Melissa Rauch) gets a kiss from Raj (Simon Helberg) as Leonard (Johnny Galecki) looks on.
Muscle Men

8. Muscle Men

Raj (Kunal Nayyar) and Howard (Simon Helberg) show off their muscles!
Run

9. Run

Sheldon (Jim Parsons) runs with Raj (Kunal Nayyar) and Howard (Simon Helberg) not far behind.
New Friend

10. New Friend

Leonard (Johnny Galecki) and Sheldon (Jim Parsons) make a new friend.
Cracking Up

11. Cracking Up

Leonard (Johnny Galecki) reacts strongly to what Sheldon (Jim Parsons) says.
Cold Outside

12. Cold Outside

Sheldon (Jim Parsons) runs into Amy (Mayim Bialik)
Keep Your Eye on The Road

13. Keep Your Eye on The Road

Howard (Simon Helberg) kisses Bernadette (Melissa Rauch) as guest stars Katee Sackhoff and George Takei look on.
Driving Off

14. Driving Off

Jim Parsons with Kaley Cuoco and Mayim Bialik get ready to go for a drive.