LOS ANGELES — Leonard Nimoy, who died Friday at age 83, likely had the most famous lobes in Hollywood. As the logical half-human, half-alien Mr. Spock in "Star Trek," his pointy Vulcan appendages became a signature — and a nuisance — for the actor. Here are a few facts about those iconic ears:

Aural history

"Trek" creator Gene Roddenberry was determined to have Nimoy don pointed ears as the Enterprise's chief science officer. It was easier said than done. Before the first episode was filmed, numerous designs of the ears' shape and size were created before he settled on the perfect ears.

Ear job

Roddenberry promised a reluctant Nimoy that if the pointy ears didn't appeal to the viewing public after the initial episodes of "Trek" that he'd arrange for Spock to undergo "ear job" and they'd be removed. Instead, the character was a hit, and no such operation was needed.

Now hear this

The early ears were made of foam rubber and had to be glued on every morning and removed every night. The process usually required Nimoy to be in the make-up chair for about 45 minutes each day. However, applying Spock's slanted eyebrows typically took twice as long.

Later ears

The process was eventually streamlined, and Spock's ears were made of latex and cranked out on an assembly line. Over the years, the lobes and their molds turned up in various celebrity auctions. A pair is on display at the National Museum of American History in Washington, D.C.

This story contains material compiled by late AP Entertainment Writer Bob Thomas.