Want to know one quick way to tell how different Canada is from the U.S.? It won't take long. Just watch a few TV commercials. They speak volumes. These days, it seems impossible to sell anything on U.S. TV networks without the use of explosions, interpersonal violence, gratuitous sex, car wrecks, or gunplay. It's almost a flip image of Canadian TV, where you see elements sadly lacking on American spots: humour, whimsy, subtlety, cleverness, intelligence. If you want a microcosm of what's wrong with the U.S. -- and what's right with Canada -- you couldn't find a better place to look than by watching their TV commercials.