In "Emission Accomplished" and "Ice Follies" Luis Guzman plays Hector Martinez, the father of James Martinez (Nicholas Turturro). In reality, Guzman is only five years older than Turturro.
Sherry Stringfield (Laura Michaels Kelly) and Robert Costanozo (Alfonzo Giardella) would appear in season nine of ER: No Strings Attached.