In the fight scene near the end between Ezekiel and Ben, a tear can be plainly seen on the left buttock of the pants that Claude Akins is wearing. Towards the end of the fight the tear disappears.
Adam: Thanks. I..ahh...I'm sorry about blowin' off all that steam a while ago.
Joe: That's all right. I'm use to taking all the guff around this family. That's what I'm here for.
Ben: Oh sure. You're really abused aren't you? Here put this plank up there.
Joe: See what I mean.
Ben: That's a wonderful idea. A wonderful idea! Adam, I want to drink a toast to you.
Hoss: Hey Pa, can we drink to him too? He's a mighty bright fella.
Joe: Down right bright and a real pride and joy to the Cartwrights.
In the opening credits, the "Special Guest Stars" are listed over a shot of the shore of Lake Tahoe. It's the only time during the series' run that this is done.