- Wanda refuses to consummate her and Derek's love.
- Wanda finds Derek's "Playboys" under his bed.
- Derek kills Wanda's cat Sir Bonkers.
- Wanda gives Derek back his promise ball and chain (Donna's Story).
- July 29, 1919 - Leonard "Leo" Chingwake is born.
- December 27, 1927 - Reginald "Red" Forman is born.
- October 13, 1933 - Katherine "Kitty" Sigurdson is born.
- July 14, 1939 - Robert "Bob" Pinciotti is born.
- December 3, 1940 - Midge Aldren is born.
- 1945 - Leo has just finished fighting in WWII and plans to return home to work at his father's pharmacy and attend Med School. Unfortunately, after hitching a ride with a jazz musician he becomes addicted to pot (Long Away).
- Kitty wins Prom Queen (Eric's Naughty No-No).
- Red becomes very depressed after being dumped by his first love Eloise (Eric's Depression).
- 1952 - Red meets Kitty (Backstage Pass).
- October 31, 1957 - Kitty tells Red she's pregnant (Halloween).
- July 15, 1958 - Lauren "Laurie" Forman is born.
- August 28, 1959 - Michael Kelso is born.
- September 17, 1959 - Randy Pearson is born.
- November 28, 1959 - Steven Hyde is born.
- February 13, 1960 - Donna Pinciotti is born.
- March 18, 1960 - Eric Forman is born.
- August 4, 1960 - Fez is born.
- September 24, 1961 - Jacqueline "Jackie" Burkhart is born.
- 1968 - Eric meets Donna, Hyde, Kelso and Jackie (Class Picture).
- 1968 - Kelso meets Red and Kitty (Class Picture).
- 1968 - Red and Kitty catch Kelso and Jackie playing "doctor" (Class Picture).
- December 24, 1972 - Red wrecks Eric's Evel Knievel Christmas present (Winter).
- 1973 - Donna meets Jackie (Class Picture).
- 1973 - The gang have their first circle (Reefer Madness & Class Picture).
- 1976 - Fez meets the gang (Class Picture & Bring It On Home).
- 1976 - Kelso unsuccessfully tries to see Donna naked (Class Picture).