Corner Gas is a Canadian sitcom that we only discovered many years ago because we were paying for Canadian satellite tv. I suppose it is a sort of Canadian Seinfeld: it isn’t really about anything, just following the interactions of characters in a rural town and the mischief, often silly, they get up to. The writing didn’t seem as strong and consistent as some sitcoms, such as Frasier in the U.S. Every once in a while an episode seems like a bit of a clunker. But I got so I enjoyed the offbeat characters so much I didn’t mind if it got a little silly or predictable at times. It is…