The Insider.com

Glee has served up a shocking number of celebrity cameos over the last three seasons (Gwyneth Paltrow, Ricky Martin, Whoopi Goldberg, Patti LuPone) but never before has a guest star swung by McKinley after being skewered on the show.

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But Lindsay Lohan's May 15 cameo (she plays herself) as a guest judge at Nationals comes after the actress was reportedly so incensed by a 2010 scene that called her "crazy," she momentarily considered legal action.

Clearly LiLo holds no animosity against the Fox show, as she Tweeted, "Glee was fun to do! It made me want to live in a world of musicals where people always just burst out into song & dance!"

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Lindsay's episode of Glee airs May 15 on Fox.