Jackman hopped into and around Radio City Music Hall for his opening at last year's Tonys in an homage to Bobby Van's scene-stealing number in the 1953 musical Small Town Girl.
"What a good piece of advice!" Chenoweth said.
"We were going to hop too," Cumming joked.
This year's Tonys will bring in big name stars like never before. The all-star lineup includes Jennifer Lopez, Nick Jonas, Kiesza, Harry Connick, Jr., Jennifer Grey, Joel Grey, Dulé Hill, Judith Light, Patina Miller, Bernadette Peters and Phylicia Rashad, Bradley Cooper, Neil Patrick Harris, Jim Parsons, Amanda Seyfried, Ashley Tisdale, Bryan Cranston, Joe Manganiello, Kiefer Sutherland, Anna Chlumsky, Larry David, Jason Alexander, Misty Copeland, Sting, Corey Stoll, David Hyde Pierce, Debra Messing, Jennifer Nettles, Marg Helgenberger, Rita Wilson, Rose Byrne, Thomas Sadoski, Sutton Foster, Taye Diggs, Taylor Schilling, Bobby Cannavale and Tommy Tune, who will all be taking the stage at Radio City Music Hall.
The night will celebrate the 10th anniversary of Jersey Boys on Broadway and will feature a performance from the cast. Additionally, the stars of Finding Neverland, Gigi and It Shoulda Been You will also perform.
The 2015 Tony Awards air Sunday, June 7 at 8 p.m. ET/PT on CBS.