A double reference: in 1×19, Peter and Olivia meet a conspiracy theorist who believes himself to be Spock from Star Trek: TOS. The same actor played an almost identical character in Star Trek: DS9.

A double reference: in 1×19, Peter and Olivia meet a conspiracy theorist who believes himself to be Spock from Star Trek: TOS. The same actor played an almost identical character in Star Trek: DS9.