**The Big Bang Theory 12.20 (Preview)**
Get a sneak peek at the upcoming episode of *The Big Bang Theory* in this exclusive preview. Leonard and Penny are preparing for their wedding, but things take a turn when Leonard discovers a hidden stash of his ex-girlfriend's letters. Meanwhile, Sheldon and Amy try to figure out if they're ready to take their relationship to the next level. And Raj and Howard bond over their shared experiences as single men.
| Channel | Category | Duration | Views |
|---|---|---|---|
| Music | TV Clip | 00:20 | 0 |
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