And now for something completely different: a shopping tip. This is for my readers who wear glasses and like going to the movies. A few weeks ago I bought a pair of 3D clip-ons, and I’m here to tell you that they’re great. More and more movies are being released solely in 3D — which means we’re getting to the point where it’s hard to avoid 3D even if you don’t like it much — and trying to wear those clown-size theater 3D specs over your usual prescription glasses is a huge pain. The clip-ons are far more comfortable and unobtrusive, which makes them a great investment, especially since they only cost four bucks. And I suppose they can even double as ordinary clip-on sunglasses if you’re into such things. Highly recommended.