In her honor, I am adapting a variant of a meme floating around the movie blogosphere ("meme"—I'm not even sure what that is unless it's plural and has the word "screaming" in front of it): Twenty Favorite Movie Subjects I Have Previously Mentioned In My Blog So Far.
Douglas Fairbanks and Mary Pickford

Frances Marion (the Silent Era's best screenwriter)

German Expressionism (here, The Cabinet of Dr. Caligari)

Charles Chaplin

Lillian Gish

Buster Keaton

Greta Garbo

Harold Lloyd

Lon Chaney

Clara Bow

The Joan Crawford/Anita Page Flapper Trilogy (throw in Dorothy Sebastian on the left and you've got the cast of Our Dancing Daughters)

Louise Brooks (wallpaper courtesy of Sylvie at Doctor Macro's High Quality Movie Scans)

Ronald Colman (with Lili Damita)

The Marx Brothers

Marie Dressler

James Cagney

pre-Code permissiveness (here, in the person of Joan Blondell)

The movies of René Clair (that's the opera scene from Le Million)

Sex Symbols (in this case, Clark Gable and Jean Harlow)

and most importantly, Katie-Bar-The-Door

Have I forgotten anyone?