or an argument?
Her uncredited part as Sadie Dugan in A Letter to Three Wives (1949) was only her second appearance in a motion picture; the first was as a shop-weary mom dragging her son around Macy's in Miracle on 34th Street (1947), which I'm sure you'll remember if you think about it.
Her third film, All About Eve (1950) earned her the first of four consecutive Academy Award nominations for Best Actress in a Supporting Role. Not bad for a gal who didn't even get into pictures until she was my age. In total, she was nominated six times:
* All About Eve (1950)
* The Mating Season (1951)
* With a Song in My Heart (1952)
* Pickup on South Street (1953)
* Pillow Talk (1959)
* Birdman of Alcatraz (1962)
...and never won. NEH-VAH. [Which reminds me,nominate your favorite scandalously neglected star for this year's Aggie Awards.]
Thelma Ritter did a lot of television work in the 50s and early 60s, including a turn as a busybody with a dangerous secret in "The Babysitter," on the first season of Alfred Hitchcock Presents.
There is a lovely filmography and tribute to Thelma Ritter here on The Film Experience Blog, but for possibly the best impersonation I've ever heard and a great review of With a Song in My Heart, please watch Episode 9 of Tired Old Queen at the Movies.
And if you haven't had enough, I stumbled across her briefish appearance as the New York co-host of the 1954 Academy Awards — a fabulous year for Oscar — On the Waterfront, Rear Window (with, oh, Thelma Ritter in another great supporting role), and Country Girl, with Bing Crosby as an alcoholic...not the biggest stretch for him artistically, from what I understand.
Some YouTube angel posted the entire event. I present the section with Bob Hope's opening monologue (sorry, no host can touch him) and Thelma Ritter, glammed up, slightly nervous, and terribly sweet.
Happy Birthy, Thelma Ritter. I love you.