Bertram "Bert" Kibbler is an employee of the Caltech geology department who met Amy while she was working there in her own lab in "The Occupation Recalibration". Bert keeps bringing Amy interesting and beautiful rocks every day. It takes Howard and Raj to point out that he likes her. Bert then asks her to a rock and mineral show which she declines because she has a boyfriend. When Bert starts talking abut how no one wants to do anything with him, Amy in a fit of sympathy agrees to go. Unfortunately, Bert is taking it as a date. Raj and Howard offer to talk to him to let him down easy and they end up going with him to the show.