I always liked the voice Jerry Nelson gave to Biff the Construction Worker. He gives him a real thick Brooklyn-based accent to resemble a typical New York-bred blue collar worker you'd find either at a construction site or else paving a city street. I'm just curious about one thing - did Jerry by any chance base Biff's voice off of Leo Gorcey's. If anyone's familiar with the "Bowery Boys" film series, you'll know who I'm talking about. It's a series of B-Movies from the 1940s and 1950s. It stars the Bowery Boys, a group of young mischievous, city dwelling fellows who were first seen in a handful of Warner Bros. crime dramas of the late 1930s such as "ANGELS WITH DIRTY FACES" with James Cagney. Leo Gorcey is the leader of the group, and when I first heard his voice I immediately thought of Biff on "Sesame Street". These movies are aired Saturday mornings on Turner Classic Movies (for anyone who gets that channel) around 10 am, so you can get a chance to see what I mean.