Yes, 'David Puddy' from Seinfeld is the same guy from the show you mentioned.
One funny guy.
He currently is also doing some funny commercials on tv.
Never saw Seinfeld and only caught Rules of Engagement by accident and watching a few reruns. The funniest role was played by David Spade. Had never heard of or saw him before that either. The gal playing the wife of Warburton was very good but actually the entire cast was - especially Kate Hudson’s son Oliver.
I know, I know - off topic!!!