The Lab Scene(origin of interociter)
This for me was a fun sequence as the long scene of tangled wires, tubes, boobs(the 2 characters) were attempting to build a scientific basis for the premise of the story starting with that wonderful communication device linking Cal and the head alien.
The instruction manual made of metal added to the mystery. The humour of the foil, Nicols,was amusing and kept "the science" lively and prevented any bogging down in strict technics.