Sheldon simply loves trains, even if it means dragging the group through a 7-hour odyssey to meet Nobel laureate George Smoot. 2. The "Summer" Variable
In a highlight of the season, Penny loses patience with Sheldon’s complex instructions and simply smashes his puzzle box to get the drive. [S2E17] The Terminator Decoupling
Sheldon must guide Penny into his "sanctum sanctorum" (his bedroom) via phone. Sheldon simply loves trains, even if it means
Raj manages to talk to her after drinking what he thinks is beer, only to lose his "magic" when Howard reveals it is non-alcoholic. Sheldon simply loves trains
Sheldon remains entirely indifferent to her celebrity, viewing her existence as a potential Skynet infiltration plot. 3. The "Penny-Sheldon" Remote Interaction