Mitundu ya ku America "chiphunzitso cha kuphulika kwakukulu", koma zomwe zidachitika mu Meyi chaka chino, pali nyengo 12, zomwe zimapangitsa kuti ikhale malo otalika kwambiri m'mbiri ya TV. Ngakhale izi, gawo limodzi mwa omvera adapeza kuti nkhanizi zinachita bwino. Malinga ndi kuwerengera kwa imdb, mawonekedwe owoneka a kanema wawayilesi kwambiri panthawi ya nkhaniyo pomwe ndalama ndi Leonard pamapeto pake adapeza chisangalalo m'chikondi - zidachitika mu nthawi yachisanu ndi chitatu.
Kumbukirani kuti kumapeto kwa nyengo yachisanu ndi chiwiri, Penny pomaliza pake amadziwika kuti ali wokonzeka kumukwatira, ndipo ukwati wawo ukuwonetsedwa m'chigawo choyamba cha nyengo yachisanu ndi chinayi. Kwa "chiphunzitso cha kuphulika kwakukulu", gawo ili linali malo osinthira osati chisamaliro chokhacho, komanso monga chiwembu. Kuyambira lero, otchulidwa onse a mndandanda - Leonard, Penny, Howder komanso Sheldon - adapeza banja lokhalitsa. Kupatula inali yekha rada yokha, yomwe idatsalira kumapeto kwa chiwonetsero.
Kwa nthawi yayitali, injini ya "chiphunzitso chachikulu cha Big Bang" chinali chodabwitsachi. Pomwe opanga adaganiza zotha kuthana ndi izi, chidwi chomwe chili pa TV chinayamba kutha. Mwina owoneka bwino pankhaniyi ayenera kutenga chitsanzo kuchokera kwa "abwenzi", komwe kupezekanso kwa Ross ndi Rakele pomaliza kunakhala chovuta chomaliza.