The focus of The Big Bang Theory
was initially the friendship between Leonard and Sheldon, who worked and lived together. But when a pretty, young aspiring actress moved in across the hall, she became part of the clique as well. Soon, rounded out by Howard, Raj, Bernadette and Amy, they were a full-on group, just like on the sitcom Friends
. But some were definitely closer.
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Two people, in particular, had a unique and underrated friendship: Sheldon and Penny. While they're polar opposites, there's no denying the pair's tightknit bond. Some might even argue that their friendship was the best them all. But why?