According to Eliza Dushku, on the day she wore her dominatrix outfit she hired a coffee truck for the cast and crew and told them they could choose between free coffee or her whip. Whilst they appreciated the free coffee it didn't stop them gawping and drooling over her. Eliza as the dominatrix received huge publicity and the clip was used extensively in advertisements for the show. This scene alone is often credited with earning the Dollhouse its second season.
Victor's persona for the "Miss Lonely Hearts" engagement is "Roger." As a verb, "to roger" is British slang roughly equivalent to the American "to hump", in a sexual sense (e.g. a dog may roger one's leg). Given that Victor's actual client is "very British", the persona's name may be an in-joke.