here's a stat on who's debuted on the chart at #1, there's been a few of them, but it hasn't happened for quite some time (without checking, i'd say 3 years??)
Ol' Red - Blake Shelton Unusually Unusual - Lonestar Brokenheartsville - Joe Nichols The Truth About Men - Tracy Byrd Who Would'nt Wanna Be Me - Keith Urban