There's no doubt about it. Arcadia is Tom Stoppard's richest, most ravishing comedy to date, a play of wit, intellect, language, brio and, new for him, emotion. It's like a dream of levitation: you're instantaneously aloft, soaring, banking, doing loop-the-loops and then, when you think you're about to plummet to earth, swooping to a gentle touchdown of not easily described sweetness and sorrow.

Semi-Tough pokes fun in rambling fashion, but it is vulgar in intelligent ways and almost always amusing in its perceptions of befuddled people who are perfectly healthy but often convinced they're not.

We are drawn to Twitter the way we are drawn to the scene of an accident.

Confession: When I went to see The Empire Strikes Back I found myself glancing at my watch. The Force is with us, indeed, and a lot of it is hot air. It's a measure of my mixed feelings about The Empire Strikes Back that I'm not at all sure that I understand the plot. The Empire Strikes Back is about as personal as a Christmas card from a bank.

Like Godard, Tati is also remarkably appreciative of the odd beauty that can be revealed in the shapes, patterns and colors created by the technology of planned obsolescence.

Horror need not always be a long-fanged gentleman in evening clothes or a dismembered corpse or a doctor who keeps a brain in his gold fish bowl. It may be a warm sunny day, the innocence of girlhood and hints of unexplored sexuality that combine to produce a euphoria so intense it becomes transporting, a state beyond life or death. Such horror is unspeakable not because it is gruesome but because it remains outside the realm of things that can be easily defined or explained in conventional ways.

Miss Dietrich is not so much a performer as a one-woman environment.