The Griffin Equivalencythe Big Bang Theory : Se... May 2026

"The Griffin Equivalency" is the fourth episode of season two of The Big Bang Theory , featuring Rajesh Koothrappali's arrogance after discovering a new astronomical object and making the "30 Under 30 to Watch" list. The episode, featuring a guest cameo by Charlie Sheen, is notable for Sheldon's iconic attempt at a "normal" smile and the first usage of his, "my mother had me tested" catchphrase. For more details, visit Big Bang Theory Wiki . The Griffin Equivalency | The Big Bang Theory Wiki