Levardis Robert Martyn Burton, Jr. (born February 16, 1957, Rhineland-Palatinate, Germany), better known as LeVar Burton, is an actor who played the role of Lieutenant Commander Geordi La Forge in Star Trek: The Next Generation. He is also well-remembered for his breakthrough role portraying the kidnapped African native Kunta Kinte in the "Roots" (1977) miniseries and hosting the children's book series "Reading Rainbow" for 22 years.
LeVar Burton was invited to Sheldon's social group gathering in the episode "The Toast Derivation" (S04E17) via Twitter. After waiting for him for a while, Sheldon concluded that LeVar was not attending his gathering and moved on. As the night developed, LeVar came to the gathering after Sheldon left, but when he saw Barry, Zack, and a half naked Stuart singing "I'm Walking On Sunshine", LeVar immediately left and decided to give up Twitter because of what he perceived to be going on at the apartment.
In "The Habitation Configuration" (S06E07), LeVar was the guest star for Sheldon and Amy's "Fun with Flags" episode about Star Trek flags. Sheldon commented that it surprisingly only took gas, free food and money to get him there. After Amy objected to his acting as episode director, stating he is worse than Wil Wheaton, Sheldon explained that he had to take his girlfriend's side. LeVar told him that he totally understood and questioned if he still got lunch. Then, a timid Sheldon nodded, so LeVar seemed happy, while Amy shook her head in frustration.