Friday evening, we strolled down Rue de Sainte Catherine, apparently the longest pedestrian street in Europe.A lively, happy buzz of voices warmed by the street's lively acoustics, smiles everywhere thanks to the warm weather . . . Interesting cross streets to peer down . . .Certain charming Canadian men to watch -- oops! that's Pater, he's mine. . .More peering -- and of course we ended up