When Rachel (Meghan Markle) introduced herself to Holly Cromwell (Zoe McLellan), she did it behind the alias "Michelle Ross". That alias was used as an inside joke between Donna (Sarah Rafferty) and Rachel in Meet the New Boss (2012) from the second season.
The actor, David Reale playing the character of Benjamin, is part of the cast of this episode. In fact, his is one of the plot's main story lines. However his name is missing from the list of cast members.