History WhamEpisode / MadMen

''Series/MadMen'' delivers these an average of once every season...and they tend to be ''huge'', with multiple storylines changing at once.

* "The Wheel" (Season 1, Episode 13; Thanksgiving 1960), [[spoiler: Peggy turns out to have been pregnant through the course of the whole first season, but doesn't accept her child.]]

* "Wee Small Hours" (Season 3, Episode 9; September 1963): [[spoiler: Sterling-Cooper almost loses the Lucky Strikes account causing Sal to be fired, Hilton is left disappointed by Don's pitch, Betty and Henry kiss before she ultimately rejects him, and Don has an affair.]] All in all, a pretty eventful episode.
* "The Gypsy and the Hobo" (Season 3, Episode 11; October 1963), [[spoiler: Betty finds out about Don's past.]]
* "Shut the Door. Have a Seat" (Season 3, Episode 13, the finale; December 1963) when [[spoiler: Don, Roger, Bert, and Lane conspire to leave and start their own agency after hearing that Sterling Cooper and Putnam, Powell, & Lowe was bought out by [=McCann=] Erickson (a real company, in case you're wondering). They take along Pete, Peggy, and Harry: three of the strongest employees at Sterling Cooper. They also recruit Joan, who directed the entire disemboweling of the offices.]]. The home front also features a helping of wham as [[spoiler: the Draper marriage ends]].
* "The Suitcase" (Season 4, Episode 7; May 1965): [[spoiler: Don learns that Anna Draper has died, and Peggy breaks up with both Duck and Mark.]]
* "Hands and Knees" (Season 4, Episode 10; August 1965): Where does one start? [[spoiler: Joan finds out she's pregnant with Roger's child. Lucky Strike fires SCDP, costing them over half their business, and Roger has to beg for thirty days to try and salvage what he can. Lane is dating a black girl who works at the Playboy Club and his father beats him with his cane when he finds out. Don is investigated by the FBI due to a potential account with the DOD, Betty lies to the government for him, and he convinces Pete to stop the account before his ''Theatre/MartinGuerre''-esque past is revealed. Pete takes the fall with the partners, getting royally chewed out for "losing" a 4 million dollar account. And Don has an anxiety attack and tells Faye the truth about himself.]]

* "In Care Of" (Season 6, Episode 13: Thanksgiving 1968): [[spoiler: Don breaks down crying as he shares an (honest) anecdote about his past to executives from Hershey, and is subsequently put on leave by the rest of the partners as a result. Ted and Peggy finally succumb to their feelings for one another, but Ted realizes that it would be a mistake to leave his wife and decides to move out to the California branch with Pete. In the end, Don brings Sally and Bobby to the whorehouse he grew up in, finally revealing the truth of his past to them and potentially salvaging his relationship with Sally as a result.]]

* "Waterloo" (Season 7, Episode 7: July 1969): In perhaps the series' biggest DramaBomb since "Shut the Door. Have a Seat", [[spoiler: Jim Cutler attempts to fire Don due to a breach of his contract, but all the other partners -- except for Joan -- vote to keep him. However, Bert Cooper then dies suddenly while watching the moon landing, leaving the company in crisis, especially as Cutler is open about seeing it as an opportunity to permanently rid the company of Don. Meanwhile, Roger, shaken by Bert's death and Cutler's reaction, arranges for the company to be bought out by [=McCann=] Erickson, ultimately saving Don and ruining Cutler's plan, but potentially compromising the future of the company.]] And meanwhile, on the home front, [[spoiler: Megan, in an awkward phone conversation, implies that she wants a divorce.]] Wow.

* "The Milk And Honey Route" (Season 7, Episode 13: October 1970) [[spoiler: Betty is diagnosed with terminal lung cancer. Pete is offered a job at Learjet and reconciles with Trudy.]]

* "The Wheel" (Season 1, Episode 12; Thanksgiving 1960), [[spoiler: Peggy turns out to have been pregnant through the course of the whole first season, but doesn't accept her child.]]

* "Wee Small Hours" (Season 3, Episode 9; September 1963): [[spoiler: Sterling-Cooper almost loses the Lucky Strikes account causing Sal to be fired, Hilton is disappointed by Don's pitch, Betty and Henry kiss before she ultimately rejects him, and Don has an affair.]] All in all, a pretty eventful episode.

** "The Phantom" (Season 5, Episode 13) [[spoiler: Sterling-Cooper gets a new office space, Beth undergoes electroshock therapy and forgets about Pete, and the episode ends with Don possibly meeting another woman besides Megan.]]

* ''Two in a row'' during Season 5. January-February 1967 were ''intense''.

* "Tomorrowland" (Season 4, Episode 13: October 1965): [[spoiler: Don spontaneously proposes marriage to Megan.]]

* "Shut the Door. Have a Seat" (Season 3, Episode 13, the finale; December 1963) when [[spoiler: Don, Roger, Bert, and Lane conspire to leave and start their own agency after hearing that Sterling Cooper and Putnam, Powell, & Lowe was bought out by [=McCann=] Erickson (a real company, in case you're wondering). They take along Pete, Peggy, and Harry: three of the strongest employees at Sterling Cooper. They also recruit Joan, who directed the entire disemboweling of the offices]]. The home front also features a helping of wham as [[spoiler: the Draper marriage ends]].
* "The Suitcase" (Season 4, Episode 7; May 1965): [[spoiler: Don learns that Anna Draper has died.]]

* "The Suitcase" (Season 4, Episode 7; May 1965): [spoiler: Don learns that Anna Draper has died.]

* "The Suitcase" (Season 4, Episode 7; May 1965): [Don learns that Anna Draper has died.]

* "Wee Small Hours" (Season 3, Episode 9; September 1963): [[spoiler: Sal gets fired, Sterling-Cooper loses the Lucky Strikes account, Hilton is disappointed by Don's pitch, Betty rejects Henry, and Don has an affair.]]