U2 share stage with tribute act

U2 has been having quite a bit of fun on this tour with the fans.

During an early show on their current tour, they invited a Bono impersonator on stage in Los Angeles to sing Sweetest Thing.

On Monday night, the band played at the Air Canada Centre in Toronto and, this time, invited a whole band on stage. The band Acrobat sang Desire while Bono and the rest of U2 stood and watched. After the performance, Bono told them, "I always wanted to meet you."