It's been 51 years since audiences first fell in love with Mary Tyler Moore on The Dick Van Dyke Show.

The admiration continued Sunday, when the 75-year-old actress was honored by the Screen Actors Guild with a lifetime achievement award, presented by her TV husband, Dick Van Dyke.

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During her speech, Moore revealed how using her middle name professionally changed the course of her career. "I spoke it out loud. It sounded right," Moore told the star-studded audience. "I wrote it out on the form, and it looked right. And it was right."

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Van Dyke, 86, spoke fondly of the actress, saying: "I know everyone loves her, but I mean, I'm serious about it. I saw her first."

Moore -- who had a benign tumor on the lining tissue of her skull removed in May 2011 -- was also recognized for raising awareness and funds for diabetes research.

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Previous Screen Actors Guild Lifetime Achievement recipients include Betty White, James Earl Jones, Julie Andrews, Clint Eastwod and Robert Redford.

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