"The Intruder", with Shatner, reminded me of "To Kill a Mockingbird" and "The Twilight Zone". "Pretty Maids All in a Row" guest stars Doohan and is a whodunnit mixed with "The Graduate", written and produced by Roddenberry.
Still to come is Nichols in "Truck Turner". "Return to the River Kwai" with Takei was the movie that caused the actor to miss some great episodes of TOS in Season 2, much to Koenig's benefit. "InAlienable" is a 2008 science fiction film with horror and comic elements, written and produced by Koenig and featuring Marina Sirtis, Alan Ruck, JG Hertzler, Tim Russ, Patricia Tallman, Gary Graham, Richard Hatch, Walter's wife, Judy Levitt - and the since-deceased Andrew Koenig, their son.