I have a bit of a fear of jinxing things, sometimes I knock on wood but mostly if there's something good I hope will happen I avoid talking about it. I get a bit nervous when I see shoes on a table too.
Theatre folks are horribly superstitious, which pisses me off sometimes. There was this theatre where the stage hands had special rituals concerning the theatre ghost and told us stories of bad things that had happened when someone had angried the ghost... spotlights falling down on stage during performances and such. When I climbed up in the rafters I saw the reason. The place was a security inspector's nightmare. I've never seen such a mess. No wonder stuff fell down, but they blamed the ghost.
For the record, if you want to see a big tough stagehand turn white with fear, just whistle on stage.
