This episode marks the first appearance of Themyscira in the Arrowverse, which is the home of the DC Comics female super heroine Wonder Woman.
Hedy Lamarr works briefly as a telephone operator. Lamarr patented Spread Spectrum technology, which (among other things) allowed the invention of the cell phone.
Hedy Lamarr was seen at a social function in the story, in general she preferred to stay home and read a book rather than attend a party.
Themyscira is actually Shipwreck Cove or Smugglers Cove (also known as Navagio Beach) in the northwest coast of the Ionian island of Zakynthos in Greece. The famous shipwreck is obviously digitally removed.
The episode title "Helen Hunt" has two meanings. The first is the hunt for Helen of Troy and the other is the name of a popular actress, tying into the Hollywood setting of the episode.