Scientist on Gear — Gray, Playful, Vector Art, Hat, Lab Coat, Red

1280 × 720

Scientist with Globe — Gray, Serious, Vector Art, Pencil, Clipboard, White

1280 × 1024

Scientist on Gear — Gray, Playful

1680 × 1050

Scientists with Explosion — Red, Humorous

1280 × 854

Cast of the Big Bang Theory

1920 × 1200

Scientist and Robot — Gray

1920 × 2336

The Big Bang Theory promotional art

1920 × 1200

Scientist with Moon — Gray, Humorous

1155 × 866

Scientist with Guitar — Blue

1680 × 1050

Man Holding Laptop — Green, Playful

1600 × 900

Man Holding Laptop — Green

1920 × 1080

Cartoon Cats

1920 × 1200