Prepare garlic bread according to package directions and keep warm.
Cut the top off and hollow out the center of the sourdough bread in shape of a football. Cut extra bread into pieces for dipping.
In saucepot over medium-low heat combine beer, cream cheese, horseradish mustard, Worcestershire sauce, chili powder and garlic powder.
Cook until mixture is smooth and melted, whisking occasionally.
Chop 1 slice of cooked bacon. Stir in cheddar cheese, Monterey Jack cheese and chopped bacon.
Heat until cheeses are melted, stirring occasionally.
Transfer cheese mixture to prepared bread bowl.
Cut remaining slice of cooked bacon crosswise into strips and arrange on top of dip to form "football laces".
Serve with reserved garlic bread pull aparts, cut up sourdough bread pieces and/or your favorite dippers.