The Greatest Showman stars performed show tunes with Corden on Broadway and W 53rd St in New York on Thursday's episode of The Late Late Show.
Jackman and his co-stars stopped traffic as they recreated song and dance numbers from the musicals Guys and Dolls, On the Town and Fame in the crosswalk. The group and their backup dancers fled the street each time traffic got a green light.
"He created this world that no one had even thought possible," he explained.
"He really, for me, epitomized the idea that your imagination is your limit in a time where things were very rigid and when the social position you were born into was the one you were stuck in," the star added.
The Greatest Showman opens in theaters Dec. 20.