Kaley Cuoco, Melissa Rauch both give a special birthday gift.
The girls have a contest to see who can make more tips.
Big Bang's Melissa Rauch feels naughty after Maxim shoot.
Penny shows up on Leonard's door step drunk.
Melissa wants to remake a famous porn flick.
Uncle Mark visits while Howard is out of town.
Bernadette gets Penny an interview at Zangen.
Bernadette goes for a relaxing soak under the stars.
Howard leaves and asks Raj to take care Bernadette.
Bernadette convinces the board to promote her.
Bernadette's car breaks down in the country.
Bernadette goes on a quest to replace a comic book.
Bernadette tries to replicate Penny's experiment.
Penny & Bernie help schmooze for a tenured position.
The seed is planted for Bernie's website.
Bernadette tests for the 50 Sexiest Scientists.
Kaley and Melissa go head to head and give head.
Stuart's NYE party bangs in the New Year.
The girls play hooky and visit Mouseland.
Wyatt visits and Raj tries find a new planet.
Raj visits Uncle Mark and Bernadette.
Penny, Bernadette find new fellas after breakups in Season 3.
Bernadette & Howard's wedding brings plenty of surprises.
Melissa remakes a porn classic.
Penny gets to meet Howard's Uncle Mark.
Bernadette's ex-boyfriend creates sexual chaos.
Kaley, Melissa and Rene ride the sybian.
Bernadette builds content for her new website.
The adult pilot episode of Melissa Rauch's new TV series.
Melissa wraps up remaking a porn classic.
Bernadette films in the park for her website.
The girls attend a swingers club and have a contest.
Bernadette gets some new content for her website.
Bernadette and Penny face off.
Bernadette goes for a wild ride.