Penny (former) worked at The Cheesecake Factory.
Bernadette (former) worked at The Cheesecake Factory.
Treisa Gary as Waitress The Fuzzy Boots Corollary Leonard and Penny's faux date.
Jeff Blum as Waiter The Agreement Dissection delivers drinks to The Posse and Sheldon.
David Trice as Waiter The Love Spell Potential who serves Raj and Lucy and Raj forces her to send something back.
Alex Ball as Waiter The Hofstadter Insufficiency who serves Amy and Bernadette drinks.
Alex Ball as Waiter The Locomotive Manipulation who serves Sheldon, Amy, Howard and Bernadette on the dinner train.
Creagen Dow as Maitre D' The Valentino Submergence who Penny tries to flirt with and gets called "ma'am".
Angela Sargeant as Lana The Bakersfield Expedition who was the diner waitress who told them to have Scotty beam them up.
Jan Hoag as Lilian The Re-Entry Minimization who was the diner waitress who offered Howard a slice of cheesecake after she recognized him as an astronaut.