The Greatest Generation

When Data's grandpa is diagnosed with an incurable illness, he doesn't express much grief, and in return, his grandpa steals his body and makes a play at immortality. It would have been a perfect plan, but the old man was set in his ways, and really doesn't know how to act in a modern, professional starship setting. Will the crew catch on that Data is once again not who he claims to be? Will Data's bad behavior get him locked up in Rura Penthe? Can he pass a Voight-Kampff test? It's the episode where the Star Trek trading cards prove that they're worth what you pay for them.