Season 7, Episode 17: "The Doll"

That man should really be in a sanitarium.

Oh, this is remarkable. I'm lounging...

...and yet my pants remain perfectly creased.

It's him. It's Carlo Costanza.

-Come on. Are you sure? -I'd know him anywhere.

I've seen that man in Tuscany. Eccentric fellow.

Reputation of being kind of a village idiot.

I still say we're related.