Can you say “100”? The cast of Glee can — and does, several times — in TVLine’s exclusive behind-the-scenes look at Tuesday’s milestone episode (8/7c, Fox).

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Along with a sneak peek at one of the episode’s highly anticipated remixes, the video also features interviews with the stars as they reflect on some of their favorite memories from the past five seasons. For Matthew Morrison, the first day he shot with Cory Monteith remains the most special.

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“I still remember the first scene we ever shot for this show was me and Cory,” Morrison says. “I just remember that moment, and I don’t know why, but that’s the moment that’s kind of sticking out the most for me today — just that first scene we ever shot for Glee.”

Hit PLAY on the video below, then drop a comment: What’s your favorite memory from the past 99 episodes of Glee? And what are you most looking forward to this Tuesday?