A malfunctioning time machine disrupts Penny's routine, causing her to lash out at her friends, and Leonard's attempts to fix the issue involve a surprising sacrifice.
Aired: Sep 24, 2007Two unorthodox theoretical physicists have their lives dramatically altered w...
Aired: Oct 1, 2007Penny's apartment is in disarray after Leonard and Sheldon's haphazard cleani...
Aired: Oct 8, 2007Leonard's jealousy boils over when he learns Penny is seeing someone else, le...
Aired: Oct 15, 2007Sheldon's mother steps in to help him deal with the emotional fallout of losi...
Aired: Oct 22, 2007A dramatic turn of events challenges Leslie's complex personality as she navi...
Aired: Oct 29, 2007Leonard's Halloween party struggles continue as he unexpectedly runs into Pen...
Aired: Nov 5, 2007The group is thrown off balance when a surprising connection forms between Ho...
Aired: Nov 12, 2007Raj's parents orchestrate a blind date for him, but his vocal cord paralysis ...
9. The Cooper-Hofstadter Polarization
Aired: Mar 17, 2008Leonard and Sheldon's friendship is strained when Leonard wants to present th...
Aired: Mar 24, 2008Leonard's attempt to dodge watching Penny's show falls apart when Sheldon's s...
11. The Pancake Batter Anomaly
Aired: Mar 31, 2008Penny unexpectedly becomes the caretaker for ailing Sheldon, whose friends de...
Aired: Apr 14, 2008A 15-year-old prodigy's arrival sparks self-doubt in Sheldon, prompting his f...
Aired: Apr 21, 2008The Physics Bowl team experiences a dramatic shift when Sheldon's intense com...
Aired: Apr 28, 2008A malfunctioning time machine disrupts Penny's routine, causing her to lash o...
15. The Pork Chop Indeterminacy
Aired: May 5, 2008A heated competition unfolds among Leonard, Howard, and Raj as they vie for t...
Aired: May 12, 2008Leonard's friends band together to throw a surprise birthday bash, determined...
Aired: May 19, 2008Penny is torn between accepting Leonard's date invitation and backing out, se...
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