<P> Bert first appeared in "The Contractual Obligation Implementation" where he is socially awkward and Raj meets just prior to a library date with Lucy . He tried to crash their date, and Raj sent him away . His name was not mentioned in the plot, but the closing credits gave the name Bert . </P> <P> In "The Dependence Transcendence", Bert hosts a Caltech party that only Amy and Penny attend . He feels that Amy is the coolest girl at work and that Sheldon is cool only because he is dating Amy . As the girls are leaving, he tells them that he is in love with both of them . </P> <P> He reappeared in "The Fetal Kick Catalyst" as a guest at Sheldon and Amy's brunch in their apartment . He mentions that a girlfriend he was living with once moved out and took all his best rocks . </P> <P> In "The Geology Elevation", Bert wins the MacArthur Fellowship grant, which makes Sheldon jealous . When Sheldon finally confronts him over this, Bert points out that the theoretical physicist has his friends and Amy to be happy about . He later accompanies Sheldon to The Ellen DeGeneres Show to make peace . His full name is shown in his award . By the end of season 10, Raj moves into the apartment over Bert's garage . </P>

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