Alternative Titles:Big Bang: A Teoria, 天才理论传, Big Bang Theory, Hamapats hagadol, תאוריית המפץ הגדול, Enfejare Bozorg, ビッグバン★セオリー, La Teoría del Big Bang, Štreberi, Teoria vel'keho tresku, Büyük Patlama Teorisi
Overview: Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
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First Air Date: Sep 24, 2007Last Air date: May 16, 2019Season: 12 SeasonEpisode: 279 EpisodeRuntime: 22 minutesQuality: HDIMDb: 7.91 / 10 by 11290 usersPopularity: 210.451Language: English