This is a production company founded by Gilmore Girls creator, Amy Sherman-Palladino. She named it as a tribute to a deceased writer/poet Dorothy Parker.
Visuals: On a shaded gray background, we see a illustration of a '50s-era woman with her back turned sitting and smoking with a martini glass in her right hand, with her lower part inside a box. When smoke rises from her cigarette, the words "DOROTHY PARKER DRANK HERE" and the word "PRODUCTIONS" surrounded by two lines fade in, with "DOROTHY PARKER DRANK HERE" casting a shadow that shifts.
Technique: 2D animation.
Audio: None or the ending theme of the show.
Availability: It appears on Gilmore Girls (including the Netflix sequel, subtitled A Year in the Life) and Bunheads. Also seen on Love and Marriage, the failed pilot of The Wyoming Story, The Return of Jezebel James and The Marvelous Mrs. Maisel.