The tourists are coming!
Tim Rucci's photo album offers a nice preview, sans all the tourists. And the Festival Web site keeps tabs on the forecast for peak bloom time.
The trees around the Tidal Basin are definitely worth seeing at least once (or twice, or three times), although, as a Washingtonian for eleven years, I now prefer to enjoy a quieter and more solitary viewing of the cherry trees that are scattered throughout various D.C. neighborhoods. I am fortunate to live in a place that has the most beautiful springtime imaginable.