Meanwhile, Lynch, who has previously suggested that she will be involved in a remake of Olivia Newton-John's 'Physical' video, named the Grease actress as her favourite guest star.
"That's so hard, but I'd have to say O N-J, Olivia Newton-John," she said. "We had so much fun together."
Glee Complete DVD Box Set continues Tuesdays at 9pm on Fox in the US and Mondays at 9pm on E4 in the UK.