Actor and recent Academy Awards host Billy Crystal is talking more about his upcoming Pixar film Monsters University and continues to get us pumped for its summer debut.

While Crystal is staying quiet about the plot (we know it follows Mike and Sulley in their college years at the tender ages of 17 and 18), he credited his co-star John Goodman (Sulley) for the great on-screen chemistry:

“We do it together and he’s a genius,” he told THR while promoting his new film Parental Guidance. “That’s why I think there’s a lot of affection between Mike and Sulley on the screen — the relationship between the two of us is so real. We really love working with each other.”

“He’s my favorite character I’ve ever played,” he continued, “This time, they’re in college — 17 and 18 years old — they made us look younger, and I have a retainer. It’s how they discover who they are.”

Another aspect to look forward to in Monsters University is the improvisation. Crystal said he improvised “like a madman” while recording his Mike voice. “The Pixar people just let me go – if it’s good, it’s good, if it’s not, it doesn’t end up in the movie. It’s hilarious.”

Monsters University will be released June 21, 2013. A trailer was released in June and Pixar earlier this week debuted an amazing website for the school itself.

Pictured above: Monsters University concept art.