In season 11, Leonard, Howard and Raj are trying to recover the bitcoin they mined years ago (now worth thousands of dollars). It is revealed that the bitcoin is in Leonard's old laptop which he gave to Penny while they were dating in Season 3. Penny then said that she gave the laptop to Zack after her breakup with Leonard. After retrieving the laptop from Zack, he shows the couple a video in the laptop that Penny made after her breakup with Leonard showing a drunk Penny apologizing to Leonard and regrets breaking up with him. Leonard is touched by the video and realizes that Penny genuinely loves him and not just out of desperation or pity.