Ustinov was never a good Poirot. The worst acting of his career. I never believed Finney's performance, either. Suchet carried it off perfectly, though I could see other actors playing the part.

Rutherford's hyperactive Miss Marple was simply hard believe and harder to watch.

Yeah, STS, I enjoyed the ensemble structure of Nero Wolfe, too. It was like watching an extemely good repertory company, wasn't it?