Mike Tyson plans to return to Broadway with a new show about his life. The ex- champ was the unlikely toast of the Tonys Sunday after dancing with Neil Patrick Harris, and he told Page Six at a Plaza after-party he’s in talks to create a play “based on his life” as “his next step in theater.” An insider told us Tyson met with Spike Lee — director of his one-man show, “Undisputed Truth” — a day before the awards, adding, “Mike wants to also get into plays and even musicals.” The source said Tyson is exploring bringing “Undisputed” back to Broadway in the fall and embarking on an international tour. Still in the white dinner jacket he wore onstage, Tyson was swarmed by fans at The Plaza when he arrived with wife Kiki “He was so excited to be in that room with producers and playwrights,” a source said. We even saw him doing a little dance as he waited for his car after the bash. Downstairs, Todd English opened up his Food Hall to throngs of starving stars and guests deprived of eats or booze at the never-ending awards, including Jane Krakowski, Jesse Tyler Ferguson and Tom Hanks, who strolled with a gourmet frozen yogurt. Hanks seemed to take his loss for Best Actor in stride: He was one of the last standing at a later Sardi’s party, where he drank arm-in-arm with winning co-star Courtney B. Vance as their wives Rita Wilson and Angela Bassett, chatted nearby. Over at a “Kinky Boots”’ party at Ruby Foo’s, Cyndi Lauper gave a tearful speech about the power of music. (Despite all the “Kinky” loot, Lauper still has her rent-controlled apartment on the Upper West Side to fall back on.) She then headed to O&M’s annual soiree at The Carlyle to party with Scarlett Johansson, Zachary Quinto, Alan Cumming and winners Billy Porter and Tracy Letts. The snazzy party suite got so packed, host Rick Miramontez asked the hotel to open Bemelmans Bar below, where Lauper serenaded resident maestro Billy Stritch on piano.