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- Season 1 overviewSep 24, 2007-May 19, 200817 episodesSeason 1 episodes1. Pilot Sep 24, 2007
- Leonard likes new neighbor Penny, but his roommate thinks he is chasing an impossible dream.
- 2. The Big Bran Hypothesis Oct 1, 2007
- Leonard volunteers to sign for a package, hoping to make a good impression on Penny.
- 3. The Fuzzy Boots Corollary Oct 8, 2007
- Unhappy that Penny is seeing someone, Leonard summons the courage to ask another woman out.
- 4. The Luminous Fish Effect Oct 15, 2007
- Getting fired gives Sheldon the opportunity to explore life beyond physics.
- 5. The Hamburger Postulate Oct 22, 2007
- Leonard, trying to get over Penny, has an unexpected encounter with a fellow scientist.
- 6. The Middle Earth Paradigm Oct 29, 2007
- Leonard, Sheldon, Wolowitz and Koothrappali attend Penny's Halloween party.
- 7. The Dumpling Paradox Nov 5, 2007
- Penny sleeps on Leonard and Sheldon's couch when Wolowitz takes over her apartment.
- 8. The Grasshopper Experiment Nov 12, 2007
- On a blind date, Koothrappali discovers that he can talk to the opposite sex after a few drinks.
- 9. The Cooper-Hofstadter Polarization Mar 17, 2008
- Penny tries to mediate when Sheldon and Leonard disagree about a physics conference.
- 10. The Loobenfeld Decay Mar 24, 2008
- Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing.
- 11. The Pancake Batter Anomaly Mar 31, 2008
- Leonard and the boys avoid Sheldon when he gets sick, leaving Penny to nurse him back to health.
- 12. The Jerusalem Duality Apr 14, 2008
- Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.
- 13. The Bat Jar Conjecture Apr 21, 2008
- The guys kick Sheldon off the Physics Bowl team and bring his nemesis aboard.
- 14. The Nerdvana Annihilation Apr 28, 2008
- Penny tells the guys their obsession with comics and toys is pathetic.
- 15. The Pork Chop Indeterminacy May 5, 2008
- Leonard, Wolowitz and Koothrappali fall for Sheldon's twin sister.
- 16. The Peanut Reaction May 12, 2008
- Penny learns that Leonard does not celebrate birthdays, so she plans a surprise party.
- 17. The Tangerine Factor May 19, 2008
- Leonard finally works up the courage to ask Penny out on a date, and both ask Sheldon for advice.
Feb 7, 2019 · The Donation Oscillation: Directed by Mark Cendrowski. With Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg. Penny tries to throw a wrench into Leonard's plan to be a sperm donor for her ex-boyfriend; Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip aboard the "vomit comet."
- (2.3K)
- Comedy, Romance
- Mark Cendrowski
- 2019-02-07
- Summary
- Extended Plot
- Credits
- Notes
- Critics
- Trivia
- Quotes
Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa. Also, Howard, Bernadette, Anu and Rajturn Koothrappali's canceled bachelor party into a couple's trip aboard the "Vomit Comet".
Zack and Marissa are visiting Leonard and Penny discussing Leonard’s pending fatherly donation. They are both grateful for Leonard’s help. Penny still thinks the subject is weird. The Johnsons' also think that it is weird that their kid will look like Leonard. Zack adds that if it’s a girl, it’ll look like Penny. No. Typical Zack. Leonard needs to ...
Guest starring:Teleplay: Steve Holland, Dave Goetsch & Maria FerrariStory: Bill Prady, Jeremy Howe & Adam FabermanTitle Reference:The title refers to Penny and Leonard changing their minds about Leonard fathering Zack's baby.Taping date: January 22, 2019This episode was watched by 13.97 million people with a rating of 2.6 (adults 18–49).This episode aired in Canada on February 7, 2019.Caroline Preece at Den of Geek! - While The Big Bang Theory has been delivering clever twists and turns this season, The Donation Oscillation undermines a lot of that and possibly sheds some goodwi...IMDb user reviewPenny's father Wyatt reappeared in this episode, marking his fifth appearance in the series. Zack and his new wife Marissaalso reappear. This episode also marks the last appearances of these three...First episode of the last ten.Leonard thought about donating sperm for Zack, but changed his mind. Not because of Penny, but for himself. Penny would have respected his wishes whether she likes it or not.This episode proved that Penny began to doubt her decision on never having children.Penny:Okay, that’s my dad. Now remember, don’t bring up any baby stuff. All right? Not me not wanting one, not you having one with Zack.Leonard:Got it.Penny:And if he brings it up, just change the subject to literally anything else.Leonard:Got it.Penny:But not the Cornhuskers, Do not discuss the Cornhuskers.Leonard:Is that a sports team?The Big Bang Theory | You're in my spot. Episode 12.15 "The Donation Oscillation" Discussion. "The Donation Oscillation" - Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack (Brian Thomas Smith), and his wife, Marissa (Lindsey Kraft . Also, Wolowitz, Bernadette, Anu (Rati Gupta) and Koothrappali turn ...
A guide to The Big Bang Theory episode `The Donation Oscillation`, the fifteenth episode of Season 12, which aired February 7, 2019. When Penny's father, Wyatt, comes to town, he reopens the debate over Penny not wanting kids and Leonard donating his sperm to Zack and Marissa.
Feb 8, 2019 · The Donation Oscillation. Season 12 Episode 15. Editor’s Rating *** « Previous Next » Photo: Michael Yarish/Warner Bros. This is a relief: Leonard has decided not to go through with being the...
"The Big Bang Theory" The Donation Oscillation (TV Episode 2019) cast and crew credits, including actors, actresses, directors, writers and more.
The Big Bang Theory. S 12 | E 15. The Donation Oscillation. 20 min. TV-PG. Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa. Howard, Bernadette, Anu and Raj turn to Raj's canceled bachelor party into a couple's trip aboard the "vomit comet". Available Episodes. S12 | E15.