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.
On The Big Bang Theory Season 8 Episode 12, Sheldon and Leonard agree to go shopping with Amy and Penny, but don't know how to kill the time without smartphones.
On The Big Bang Theory Season 8 Episode 11, the guys try to get rid of a bird that gets into the clean room and threatens their experiment, but accidentally kill it.
Now, typically I wear pajamas, but I recently adopted a hobo lifestyle and pajamas are the sleep-pants of the Man. I'll have you know, Mahatma Gandhi wore no pants and a nation rallied behind him!