Two of the most omnipresent frontmen in rock -- seriously, I bet if you polled Main Street USA, people would recognize them equally -- Bono and Bret Michaels were each hospitalized this week, leaving many fans wondering about their upcoming Twin Cities area performances.

For now, it looks as if U2's sold-out TCF Bank Stadium gig is safe despite Bono undergoing emergency back surgery this morning. A local Live Nation rep did nothing to reassure fans, though, only sending out a curt email that said, "There will be no additional statements." However, the band so far has only postponed one show, June 3 in Salt Lake City, which was to be the summer tour opener. Bono will have three more weeks to heal up in time for Minneapolis. He probably won't be doing as many high kicks in "Get Your Boots" is all.

Michaels' June 4 gig at the Medina Entertainment Center is the one that seems much more doubtful, what with the Poison singer already suffering his brain hemorrhage last month and then getting hit with a so-called "warning stroke" this week, apprantely related to a previously diagnosed hole in his heart. For now, though, the show is still on. In fact, Michaels' publicist says he will still make it to New York for Sunday's "Celebrity Apprentice" finale -- no, wouldn't want to miss that! Also, the Hard Rock Casino in Biloxi, Miss., is even still expecting Michaels to make his gig there next week, which would be his first return to the stage. Stay tuned.