It's not just Shatner! The ham was airborne and could affect anyone at any time! Here's a chance for all of you to list, mention, and discuss your personal favorite and least favorite moments of overacting from any character and from any episode, be it cringeworthy, so bad it's good, or just plain terrible.
Examples
1. "I'M CAPTAIN KIIIIIRRRRK!!!!!!"
2. "AAAAHHHH!!!! PAIN!!!!!!"
3. The fight scene in Mirror Mirror. Spock's eyes, the obvious stunt doubles, Uhura's random dancing...

Examples
1. "I'M CAPTAIN KIIIIIRRRRK!!!!!!"
2. "AAAAHHHH!!!! PAIN!!!!!!"
3. The fight scene in Mirror Mirror. Spock's eyes, the obvious stunt doubles, Uhura's random dancing...

