Penny asks Leonard to pose as her boyfriend when her father visits. Howard, Raj and Bernadette have an awkward encounter when they spend the evening together.



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Penny's father, Wyatt, is in Pasadena for a visit. Leonard learns that Penny told her father that she and Leonard got back together again, as Leonard is the one and only of her boyfriends of who he has ever approved. Leonard agrees to go along with the ruse, but much against Penny's chagrin, he does so on his terms and not hers. But what would happen if Wyatt found out the truth? Sheldon, believing that Leonard and Penny have indeed gotten back together, decides to amend their roommate agreement to compensate for the Penny factor. Meanwhile, Raj has finally been allocated time to monitor a high powered telescope for twelve hours, and he invites Howard along, who in turn invites Bernadette. Raj is initially peeved at Bernadette's presence since he doesn't feel like he can drink (to be able to speak to her) and monitor the telescope at the same time. Raj makes the decision to consume alcohol, and his arc of drunkenness over the course of the evening ends with a close encounter with ... Written by Huggo

Plot Summary | Plot Synopsis


Comedy | Romance


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Release Date:

18 November 2010 (USA)  »

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Aspect Ratio:

16:9 HD
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Did You Know?


The title refers to Leonard pretending to be Penny's boyfriend to please her father. See more »


In episode 2.15, the Maternal Capacitance, Penny refers to her father as "Bob," but when he visits in episode 4.9, the Boyfriend Complexity, his name is Wyatt. See more »


[first lines]
Raj Koothrappali: You know who's got to be the bravest person in the Marvel universe? Whoever has to give She-Hulk her bikini wax.
Howard Wolowitz: Want to talk brave? How about Captain America's undocumented Mexican gardener?
Leonard Hofstadter: He's not braver than whoever uses the bathroom after the Thing.
Sheldon Cooper: As usual you're all wrong; the bravest person in the Marvel universe is the doctor who gives Wolverine his prostate exam.
Howard Wolowitz: How about the guy who gets a prostate exam from Wolverine?
Sheldon Cooper: Now you're just being silly. Wolverine never ...
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Crazy Credits

CHUCK LORRE PRODUCTIONS, #314 Mornings are the worst. The mind seems undefended, easy prey for both memories and imagination. What happened. What should've happened. What might happen someday. Your fault, my fault, no one's fault. The only way to relieve the torment is to get up, empty the bladder, drink the coffee, read the paper, run the treadmill, perform the animal sacrifice, paint the chicken blood on the groin and call upon the demonic spirits to bring you back. Nights are bad too. Once again, exhaustion makes the mind vulnerable to obsessing over woulda, shoulda, coulda. The only thing to do is sit alone and eat the chicken which was senselessly murdered in the morning. See more »


References The Notebook (2004) See more »


The Big Bang Theory Theme (Instrumental)
Composed and Performed by Barenaked Ladies
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User Reviews

Penny's dad appears in "The Boyfriend Complexity" ep of "The Big Bang Theory"
4 October 2011 | by (Baton Rouge, La.) – See all my reviews

In this ep of "The Big Bang Theory" from last season: Leonard goes to Penny's apartment and finds a middle-aged man there. Turns out he's her father (Keith Carradine) and he's just been told his daughter and Leonard are back together. So when Penny intros them, she also plants a big one on Leonard! When Sheldon hears of this, he concludes she's "coocoo for Coco Puffs". Meanwhile, Raj and Howard are spending 13 hours at Raj's lab for some telescope sighting. Besides Indian Monopoly, Battleship, and 7 hours worth of comic books, Howard also invited Bernadette along who brought some champaign to help Raj talk to her. Actually, she brought a second bottle which may have been one too many...This is another very funny ep of "The Big Bang Theory" especially when Raj and Bernadette start impersonating Howard's mother. And what about Wyatt's (Penny's dad) going on about Leonard's positive attributes compared to his daughter's previous boyfriends especially the one who tried to get beer pong in the Olympics. So on that note, "The Boyfriend Complexity" ep of "The Big Bang Theory" is highly recommended.

5 of 9 people found this review helpful.  Was this review helpful to you?

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