(To show how memorable his acceptance speech is, the winner that year for Best Supporting Actress was Mercedes Ruehl, in The Fisher King. And though that was a very good, intriguing movie, it's probably not as well-remembered as this acceptance.)
In some ways, Jack Palance was an equivalent of Lee Marvin in the just-mentioned Cat Ballou. Both had had long careers playing tough guy supporting roles in some very good movies, but lots of B-movies. And then deep into their careers they won an Oscar for a comic western. The similarities largely end there. After all, Marvin not only won for Best Actor, but was a mere 41 when he won -- old by leading man standards, but young enough to go on to suddenly develop a new career as a star. Palance by contrast was 73.