What about "What happened on 23d Street, New York City", an Edison film from 1901?
Did they show some bloomers in that one? ;o)
That's the only movie from this list that I've seen. Most of the mass-consumption flicks from the last 25 years aren't worth seeing. This list excludes too many good films from 1965 and earlier.
Just off the top of my head (I'm sure I'm missing some), I can think of ten good scenes/characters, mostly from older films:
* Loretta Young/Grace Kelly/Eva Marie Saint flirting with Cary Grant in "The Bishop's Wife"/"To Catch a Thief"/"North By Northwest"
* Virginia Mayo/Vera-Ellen/Cyd Charisse/Mitzi Gaynor/Doris Day singing and dancing in the musicals of the mid-40s-early '60s
* Ursula Andress coming out of the water to Sean Connery in "Dr. No"
* Maureen O'Hara and Brian Keith getting back together in "The Parent Trap"
* Julie Andrews and Christopher Plummer in the gazebo scene in "The Sound of Music"
* Lesley Ann Warren in "Victor/Victoria"
* Michelle Pfeiffer singing on top of a piano to Jeff Bridges in "The Fabulous Baker Boys"
* Catherine Zeta-Jones in a cat-burglar suit for Sean Connery in "Entrapment"
* "Helen Parr" in her Elastic Girl suit in "The Incredibles"
* Diane Lane in either "Under the Tuscan Sun" or "Must Love Dogs"