Johnny's and Mark's constant statements about being best friends, when you know Wiseau wrote the part specifically for Greg Sestero, his only friend.
When Denny confesses to Johnny that he's in love with Lisa, Johnny assures him that Lisa loves him platonically, and that the world would be a better place if more people cared about each other. He also encourages him to make a life with his girlfriend Elizabeth.
Johnny giving the flower shop dog a brief head-pat before departing. "Hai doggy!"
Their scenes are repetitive, and their personalities are unpleasant, but it's nice how Claudette pokes Lisa's nose every time they say goodbye, something only a mother could get away with.
