9.5/1011,028 votesLoading...#1 - Unraveling the Mystery: A Big Bang Farewell
Season 12 Episode 24 - Aired 5/16/2019
Johnny Galecki and Kaley Cuoco will lead fans on a trip down memory lane, sharing some of the best-kept backstage secrets and personal memories from the past 12 years.
Director: N/A
Writer: N/A
9.1/107,336 votesLoading...#2 - The Bath Item Gift Hypothesis
Season 2 Episode 11 - Aired 12/15/2008
Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
Director: Mark Cendrowski
Writer: N/A
9.0/105,608 votesLoading...#3 - The Staircase Implementation
Season 3 Episode 22 - Aired 5/17/2010
Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
Director: Mark Cendrowski
Writer: N/A
9.0/105,620 votesLoading...#4 - The Opening Night Excitation
Season 9 Episode 11 - Aired 12/17/2015
After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket.
Director: Mark Cendrowski
Writer: N/A
9.0/104,452 votesLoading...#5 - The Bow Tie Asymmetry
Season 11 Episode 24 - Aired 5/10/2018
When Amy's parents and Sheldon's family arrive, everybody is focused to make sure all wedding arrangements go according to plan – everyone except the bride and groom.
Director: Mark Cendrowski
Writer: N/A
9.0/105,289 votesLoading...#6 - The Change Constant / The Stockholm Syndrome
Season 12 Episode 23 - Aired 5/16/2019
Sheldon and Amy await big news. Meanwhile, Penny and Leonard have some big news of their own. Also, Howard and Bernadette face the stressful challenge of leaving their kids for the first time and Raj makes a new friend, as the gang travels together into an uncharted future.
Director: Mark Cendrowski
Writer: N/A
8.9/105,835 votesLoading...#7 - The Adhesive Duck Deficiency
Season 3 Episode 8 - Aired 11/16/2009
With Leonard, Howard and Raj away camping in the desert, an injured Penny has only Sheldon to rely on.
Director: Mark Cendrowski
Writer: N/A
8.8/105,240 votesLoading...#8 - The Maternal Capacitance
Season 2 Episode 15 - Aired 2/9/2009
Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.
Director: Mark Cendrowski
Writer: N/A
8.8/105,051 votesLoading...#9 - The Thanksgiving Decoupling
Season 7 Episode 9 - Aired 11/21/2013
Sheldon protests when the gang drags him to Mrs. Wolowitz’s house for Thanksgiving. Meanwhile, Penny and Leonard must deal with a mistake from her past.
Director: Mark Cendrowski
Writer: N/A
8.7/105,318 votesLoading...#10 - The Barbarian Sublimation
Season 2 Episode 3 - Aired 10/6/2008
Sheldon creates a monster when he introduces Penny to online gaming.
Director: Mark Cendrowski
Writer: N/A
8.7/104,918 votesLoading...#11 - The Robotic Manipulation
Season 4 Episode 1 - Aired 9/23/2010
Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a robotic arm.
Director: Mark Cendrowski
Writer: N/A
8.7/104,927 votesLoading...#12 - The Scavenger Vortex
Season 7 Episode 3 - Aired 10/3/2013
When the entire gang competes in a scavenger hunt designed by Raj, it brings out the best - and worst - in everyone.
Director: Mark Cendrowski
Writer: N/A
8.6/105,020 votesLoading...#13 - The Panty Piñata Polarization
Season 2 Episode 7 - Aired 11/10/2008
When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.
Director: Mark Cendrowski
Writer: N/A
8.6/104,428 votesLoading...#14 - The Lunar Excitation
Season 3 Episode 23 - Aired 5/24/2010
While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon's perfect match online.
Director: Peter Chakos
Writer: N/A
8.6/104,546 votesLoading...#15 - The Justice League Recombination
Season 4 Episode 11 - Aired 12/16/2010
The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a costume contest as the Justice League.
Director: Mark Cendrowski
Writer: N/A
8.5/105,077 votesLoading...#16 - The Tangerine Factor
Season 1 Episode 17 - Aired 5/19/2008
Penny's break-up spurs Leonard to summon the courage to ask her out, and each goes to Sheldon for advice on their upcoming date.
Director: Mark Cendrowski
Writer: N/A
8.5/104,604 votesLoading...#17 - The Vegas Renormalization
Season 2 Episode 21 - Aired 4/27/2009
Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas, and Sheldon becomes locked out of his apartment and must stay with Penny.
Director: Mark Cendrowski
Writer: N/A
8.5/104,136 votesLoading...#18 - The Roommate Transmogrification
Season 4 Episode 24 - Aired 5/19/2011
When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard swap places and Penny does something she's regrets.
Director: Mark Cendrowski
Writer: N/A
8.5/104,678 votesLoading...#19 - The Good Guy Fluctuation
Season 5 Episode 7 - Aired 10/27/2011
A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.
Director: Mark Cendrowski
Writer: N/A
8.5/104,379 votesLoading...#20 - The Hawking Excitation
Season 5 Episode 21 - Aired 4/5/2012
When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
Director: Mark Cendrowski
Writer: N/A
8.5/104,236 votesLoading...#21 - The Countdown Reflection
Season 5 Episode 24 - Aired 5/10/2012
The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding. NASA astronaut Mike Massimino has a cameo as himself.
Director: Mark Cendrowski
Writer: N/A
8.5/103,658 votesLoading...#22 - The Long Distance Dissonance
Season 10 Episode 24 - Aired 5/11/2017
The gang is concerned when Sheldon’s former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.
Director: Mark Cendrowski
Writer: N/A
8.4/104,411 votesLoading...#23 - The Gorilla Experiment
Season 3 Episode 10 - Aired 12/7/2009
Penny gets help from Sheldon in order to understand what Leonard's work is, while Wolowitz develops a jealousy when Leonard starts hanging out with his new girlfriend.
Director: Mark Cendrowski
Writer: N/A
8.4/104,500 votesLoading...#24 - The Einstein Approximation
Season 3 Episode 14 - Aired 2/1/2010
Sheldon's search for the answer to a physics problem leads him to work at the Cheesecake Factory with Penny.
Director: Mark Cendrowski
Writer: N/A
8.4/104,406 votesLoading...#25 - The Precious Fragmentation
Season 3 Episode 17 - Aired 3/8/2010
When the guys find a ring from "The Lord of the Rings" at a garage sale, it threatens to tear them apart.
Director: Mark Cendrowski
Writer: N/A
The Best Episodes of The Big Bang Theory
Every episode of The Big Bang Theory ranked from best to worst. Let's dive into the Best Episodes of The Big Bang Theory!
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Genre:Comedy
Network:CBS
Best Episodes Summary
"Unraveling the Mystery: A Big Bang Farewell" is the best rated episode of "The Big Bang Theory". It scored 9.5/10 based on 11028 votes. Directed by N/A and written by N/A, it aired on 5/16/2019. This episode scored 0.4 points higher than the second highest rated, "The Bath Item Gift Hypothesis".