After Elaine grabs Mr Pitt by the lapel with inky hands the inkstains vary markedly between cuts and again when he is addressing an audience at the end of the show.
Kramer drops popcorn, chips, napkins, a cardboard tray and several other items before he rushes into the bathroom. When comes out, implied to only be about a minute later, the floor is clean except for the popcorn.
Mr. Pitt says he is on the Board of Trustees of the water company involved in a merger. Board of Trustees is used only for non-profits. He would actually be on the company's Board Of Directors.
Both of the Romanian characters - Katya and Misha - have Russian names. Romanian is a Romance language; and Russian was never taught in Romanian schools even before 1989. Hence the likelihood of this occurring in real life is virtually nil.