Mr Anderson is Hank Hill

one distinct difference -- Hank says butane is the bastard gas On Mr Anderson's camper, (B&B Do America) he says there is no substitute for a good butane regulator

...And they are ALL Mike Judge! Anderson, Hill, Beavis and Butthead! =)

Mike Judge had to help sell the King of the Hill show, so he made Hank have the same voice as Tom Anderson from B & B. Kinda cheap, but that's TV for you.