As with most television shows, the most popular episodes of the legendary CBS sitcom The Big Bang Theory are the ones that give some weight to them. Episodes highlighting relationship or career milestones holiday episodes and notable guest star appearances typically top the series’ most beloved episodes list.

The third-season episode The Einstein Approximation may lack significant plot twists and character-defining moments, but it’s still an excellent half-hour television. In the episode, The Big Bang Theory  Sheldon Jim Parsons is experiencing a manic episode while struggling to solve a mathematical equation.

The climax of The Einstein Approximation is Sheldon’s dogged search for the flaw in his equation. He begins facing away from a whiteboard with his formula written on it, quickly whipping around to steal one-second glances at it to only view my work as a fleeting image to engage the superior colliculus of my brain.