The 18 Most Memorable Big Brother Moments

From the fights to the amazing reunions and bromances, these are the greatest Big Brother moments ever...

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Mike "Boogie" Malin and Dr. Will Kirby of Season 2 and later Big Brother All-Stars made up the show’s first alliance: Chilltown. Their bromance, and their hilarious phone calls, made them two of the show’s most memorable Houseguests.

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Chima Simone was evicted in Season 11 after throwing her microphone in the pool, covering cameras, and refusing to report to the Diary Room. Her self-sabotaging behavior ensured her wish was granted—she got to leave the show.

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Jeff Schroeder's Coup d'Etat in Season 11 allowed him to overthrow the Head of Household's nominations. He used the special power to overthrow Chima's nominations, which later led to her on-air unraveling.

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Season 12's Rachel Reilly uttered one of the most-quoted lines of the series during her fight with Kristen Bitting after winning Head of Household: "Floaters, you better grab a life vest."

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When Dan Gheesling returned to the Big Brother house for a second season, he staged his own funeral and eulogized himself, throwing his partner under the bus in the process. It all worked out, because the returning Season 10 champ ended up taking second place in Season 14.

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Janelle Pierzina of Season 6 taunted Jennifer Vasquez and Maggie Ausburn (whom she had just put on the block) and it was all captured on live TV.

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Things got incredibly spicy in the Big Brother house when an argument between Season 21's Christie Murphy and Nick Maccarone spilled over into the House's Taco Tuesday group dinner. Murphy wound up exposing Maccarone's game in front of everybody, ultimately saving herself from eviction that week.

When Angie "Rockstar" Landry was (falsely) thrown under the bus during Brett Robinson's eviction ceremony speech in Season 20, the eclectic stay-at-home mom launched into one of the most famous -- and dramatic -- rants in Big Brother history.

"I cannot, on my daughter's birthday, believe that you would sit there and do some crap like that," she told him. "I... I cannot!"

"Then don't," retorted Robinson.

Keesha Smith from Season 10 had the most dramatic birthday party of all time as the Houseguests got into a massive disagreement during the festivities. "No tears," Renny Martyn told Keesha amid the sad rendition of the birthday song.

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Lawon Exum was convinced that, if evicted, he would return to the game with super powers in Season 13. He was wrong.

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Remember when twin sisters Adria and Natalie Montgomery played the game as the same person for several weeks in Season 5?

After a month of swapping spots unnoticed, the twins were allowed to play the game as individuals. They paved the way for the Liz and Julia Nolan "twin twist" in Season 17.

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Season 3's Marcellas Reynolds was up for eviction. He won the veto. Then he didn’t use it. In a moment that only seemed to shock Marcellas, he was sent home.

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America voted Season 6’s Kaysar Ridha back into the house after he was evicted. Unfortunately, Jennifer Vasquez betrayed him and he was sent home (again) a week later.

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Season 5, a.k.a. Project DNA, brought together two half-siblings who had no idea they were related. Michael "Cowboy" Ellis and Nakomis Dedmon received the surprising news that they share the same father.

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When Season 2 winner Dr. Will returned for Season 7, he already had many villainous moments under his belt. His most memorable one came when facing eviction. Dr. Will delivered a speech promising to throw every competition if the House kept him around, and they did.

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Jeff Schroeder and Jordan Lloyd fell in love during their time as fellow Houseguests on Season 11. They made an appearance on Season 16 for a romantic on-air proposal.

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Shortly after Rachel was voted out in Season 12, a Pandora’s Box twist returned her to the house for 24 hours as a “punishment” for the remaining players. Not surprisingly, several arguments ensued.

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Zingbot 3000 first appeared on the show in Season 12 to zing and hurl hilarious insults at the Houseguests.

Stream full episodes of every past season of Big Brother on CBS All Access.