Okay, so I haven't literally watched TWOK 500 times, but I've watched it a lot. Most recently last night. And I noticed a couple of details I hadn't paid attention to before.
- During the Kobayashi Maru, Saavik is wearing one earring, only in her left ear.
- An entire wall in Spock's quarters is decorated with an IDIC symbol.
- The entire conversation between Kirk and McCoy in Kirk's apartment felt like it was copied wholesale from the Pike/Boyce conversation in "The Cage".