The Big Bang Theory: Season 2, Episode 11

The Bath Item Gift Hypothesis (15 Dec. 2008)

TV Episode  |  TV-14  |   |  Comedy
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Ratings: 9.2/10 from 2,820 users  
Reviews: 3 user | 1 critic

Leonard is disappointed when Penny develops an interest in an attractive physicist at the university. Meanwhile, Sheldon struggles to find an appropriate Christmas gift for Penny.



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Sheldon is angry at Penny because she bought him a Christmas gift. Sheldon now feels he has to reciprocate and go through the trouble of buying something for someone he doesn't really understand, all at the same price of the gift he is about to receive. Meanwhile, David Underhill, last year's MacArthur grant award winner based on his work which has basically rendered Leonard's recent work meaningless, is a new addition to the Physics department at Cal Tech. Regardless, Leonard is enthralled to be working with Dave, who is not only good looking, but Leonard learns is a Renaissance man. Upon their meeting, Dave is attracted to Penny, and vice versa, and they decide to date. Penny even pretends to be a science geek to impress him. Leonard is angry at Penny's hypocrisy, since she was scared that Leonard was too smart for her to date. Penny, however, has some more important news about her relationship with Dave. Written by Huggo

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15 December 2008 (USA)  »

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Did You Know?


Sheldon hugs Penny for the first time despite his aversion to human contact. See more »


In the beginning of the episode, Dave underhill entered the cafeteria scene and sat with a group of people. During the scene, he changes seat 3 times within a 15 second span. See more »


[first lines]
Sheldon Cooper: Your argument is lacking in all scientific merit. Now, it is well established Superman cleans his by flying into Earth's yellow sun, which incinerates any contaminant matter and leaves the invulnerable kryptonian fabric unharmed and daisy-fresh.
Howard Wolowitz: What if he gets something kryptonian on it?
Sheldon Cooper: Like what?
Howard Wolowitz: I don't know. Kryptonian mustard.
Sheldon Cooper: I think we can safely assume all Kryptonian condiments were destroyed when the planet Krypton exploded.
Raj Koothrappali: Or it turned into mustard kryptonite, the only ...
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Crazy Credits

CHUCK LORRE PRODUCTIONS, #233 Recently the magazine Entertainment Weekly had an article entitled the "The 25 Smartest People in Television." Yours truly was ranked at number twenty. If the article is to be taken seriously, and God knows, why wouldn't any sensible person take it seriously, that means there are currently nineteen people in the TV biz who are smarter than me. Now I'm just thinking out loud here, but if something were to happen to those nineteen people... if say, they were to, one by one, have horrible accidents, or mysteriously disappear, then that would make me, ipso facto, the number one smartest person in television. Then I'd just have to keep an eye on number twenty-one. Christina Wayne, Senior VP of original programming at AMC, looks like the kind of woman who would stop at nothing to move up a spot. See more »


Features Wii Sports (2006) See more »


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

Perfect Example of How BBT Took The Wrong Road
25 December 2014 | by (United States) – See all my reviews

The episode is one the best because it uses the story line it should have kept instead of making a wrong turn and making Penny and Leonard a couple.

The show provides a lot of laughs when a good-looking scientist visits and swoops up Penny while leaving Leonard to fret about the guy doing what he would like to do with Penny.

When this episode is compared with the last couple of seasons, it is easy to see why the show is a shadow of itself. Making Leonard and Penny a couple eliminated story lines that could parade various boyfriends through Penny's apartment and banished some of the best secondary characters like Zack because they do not fit since there is no room for Penny having a boyfriend.

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

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