Bret MichaelsFresh off his 'Celebrity Apprentice' win, and several struggles with his health, Bret Michaels made a big entrance on the 'American Idol' finale.

The Poison frontman came on stage to sing 'Every Rose Has Its Thorn' with third-place finisher Casey James, to much applause.

Michaels was a big secret, according to TMZ. In late April, the singer suffered a brain hemorrhage, but had a miraculous recovery. After being released from the hospital, however, he suffered a "warning stroke" that sent him back. However, he was able to appear on the live finale of Trump's 'Apprentice' and now 'Idol.' Watch It Below