Reggie Rat

After the Sixth Doctor finished telling the audience that they had been watching Roland Rat: The Series, and that they should now switch over to BBC1's Doctor Who, Ron Rat jumped up, shouting that Doctor Who was "rubbish". This caused the Sixth Doctor to promptly attempt to murder the rat with a ray-gun he just happened to have on his person.

Fortunately for Ron, the Doctor was a lousy shot. (TV: Untitled)