On The Big Bang Theory Season 8 Episode 22, Leonard gives a graduation speech via Skype with the help of Penny, and sports cap and gown that doesn't exactly fit.
On The Big Bang Theory Season 8 Episode 20, Penny and Leonard argue over whether or not Penny should take an audtion for a film while on a podcast with Will Wheaton.
On The Big Bang Theory Season 8 Episode 18, the gang gathers together for one final dinner to honor Mrs. Wolowitz, eating the last food she ever prepared.
Leonard: Hi. I'm Leonard. You are beautiful. You pop, sparkle and buzz electric. I'm going to pick you up at eight, show you a night you will never forget. Raj: Where are we going?
Leonard: The more the merrier. Sheldon: That's a false equivalency, more does not equal merry. If there were two thousand people in this apartment, would we be celebrating? No, we'd be suffocating.
