I’m fairly sure this happens quite a bit in this show, but they’re generally tied up each time, so it’s all good.

This is from the episode “The Devil’s Fingers”, with guest villian being Liberace.  He actually plays duel roles, both as Chandell, a character not unlike himself, and his evil twin brother, which has him in plain brown suits and doing a very bad gangster accent (seen in one of the pics below).  The plot involved the fact that Chandell’s performance for the President of the United States (never seen, but talked about), to his great shame, was actually done with a player piano… and his evil twin brother blackmails him to do his bidding.

I have to say, to me, this was actually one of the genuinely funniest episodes of the series so far.  I enjoyed it quite a bit from a comedy point of view.  The bondage was only so-so I suppose, but this is an episode…