Jack Black may call Angelina Jolie a pal -- but Scotty McCreery won't give him the time of day!

On Wednesday's American Idol finale, the 17-year-old country singer bested fellow finalist Lauren Alaina to win the 10th-season title. Overwhelmed by the (to some) surprising results, the Garner, NC native descended into the audience to hug family and friends in the first row.

Standing excitedly among the well-wishers was actor-musician Black, 41, who patiently waited his turn to embrace the brand-new Idol . . . only to be sadly denied.

Watch the surprising Idol dis now!