Dale Wilson (The Man From Glad in this episode) was the actual "Man From Glad" in the 1970's television commercials.
This is the first time Mike O'Brien's character is referred to by name.
Oscar says his Pilsner style home brew is like Belgian beer. He might be referring to the famous Belgian 'Lambic' beers which are left open to the air and fermented by wild yeasts and bacteria. Lambics tend have a slightly sour flavor.