Task: Question Generation
Input (English): Jack Brickhouse manned the Cubs radio and especially the TV booth for parts of five decades, the 34-season span from 1948 to 1981. He covered the games with a level of enthusiasm that often seemed unjustified by the team's poor performance on the field for many of those years. His trademark call "Hey Hey!" always followed a home run. That expression is spelled out in large letters vertically on both foul pole screens at Wrigley Field. "Whoo-boy!" and "Wheeee!" and "Oh, brother!" were among his other pet expressions. When he approached retirement age, he personally recommended his successor.
Output (English): What was Jack Brickhouse's trademark call?