And what do you think it means, Dana?

Dana Milbank attempts to establish a W fidget scale:

"Does it worry you," NBC's Matt Lauer is asking him at a construction-site interview in Louisiana, that prosecutors "seem to have such an interest in Mr. Rove?"

Bush blinks twice. He touches his tongue to his lips. He blinks twice more. He starts to answer, but he stops himself.

"I'm not going to talk about the case," Bush finally says after a three-second pause that, in television time, feels like a commercial break.

Only the president's closest friends and family know (if anybody does) what he's really thinking these days, during Katrina woes, Iraq violence, conservative anger over Harriet Miers, and legal trouble for Bush's top political aide and two congressional GOP leaders. Bush has not been viewed up close; as he took his eighth post-Katrina trip to the Gulf Coast yesterday, the press corps has accompanied him only once, because the White House says logistics won't permit it. Even the interview on the "Today" show was labeled "closed press."

But this much could be seen watching the tape of NBC's broadcast during Bush's 14-minute pre-sunrise interview, in which he stood unprotected by the usual lectern. The president was a blur of blinks, taps, jiggles, pivots and shifts. Bush has always been an active man, but standing with Lauer and the serene, steady first lady, he had the body language of a man wishing urgently to be elsewhere.

The fidgeting clearly corresponded to the questioning. When Lauer asked if Bush, after a slow response to Katrina, was "trying to get a second chance to make a good first impression," Bush blinked 24 times in his answer. When asked why Gulf Coast residents would have to pay back funds but Iraqis would not, Bush blinked 23 times and hitched his trousers up by the belt.

When the questioning turned to Miers, Bush blinked 37 times in a single answer -- along with a lick of the lips, three weight shifts and some serious foot jiggling. Laura Bush, by contrast, delivered only three blinks and stood still through her entire answer about encouraging volunteerism.