Leonard Nimoy, Jim Parsons Leonard Nimoy, Jim Parsons

Trekkers, set your DVRs for late March.

Leonard Nimoy, who originated the role of eminently logical Vulcan Spock in the Star Trek franchise, will guest-star in the March 29 episode of CBS' The Big Bang Theory, TVLine reports.

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As a proper self-respecting geek, Sheldon (Jim Parsons) worships Nimoy for playing the science officer, but he won't be meeting the actor in the flesh. Instead, Spock will speak to Sheldon in a dream sequence.

Nimoy has been limiting his onscreen appearances lately except for a cameo on J.J. Abrams' big-screen Star Trek reboot and playing William Bell on Fox's Fringe.