Batman, Batman and Robin ran afoul of Louie the Lilac, who trapped them in a man-eating lilac bush and later got them. . .um. . .all wrapped up in each other (Batgirl was in the melange, too).
Later I saw Louie the Lilac, aka Milton Berle, as a desk clerk on Get Smart (1968), a fast-talking used car salesman on Here's Lucy (1969), a tv clown on Mod Squad (1971), and another used car salesman in The Muppet Movie (1979), without ever realizing that he was Mr. Television.
Not many episodes have survived, but apparently it was a musical-variety program with Berle, or Uncle Miltie doing stand-up comedy and sketches, including frequent drag numbers and the lisping catch phrase "I'll kill you a million times." Sounds gay-coded to me.
Roseanne (1995), he catches the bridal bouquet at the gay wedding that Roseanne arranges for her boss.
Oddly enough, he was homophobic in real life, throwing around the words "fag" and "queer" with abandon. In 1993, he was scheduled to present an award with drag performer RuPaul, and a backstage incident caused a well-publicized feud between Old and New Drag. According to RuPaul, Berle made rude comments and inappropriately touched her breasts.
Hollywood rumors give Uncle Miltie another claim to fame: he was widely recognized to have the largest endowment in the business, surpassing a foot in length. Apparently he was not shy about displaying it to anyone curious, as long as they weren't "queer."