WASHINGTON - Thirty years ago, in theaters near and far, far away, a movie opened the imaginations of millions, combining the magics of mythology and special effects to launch the "Star Wars" phenomenon. A star of those films — the brave little robot R2-D2 — is about to take a turn collecting mail as the Postal Service and Lucasfilm Ltd. commemorate that movie launch. The post office is wrapping mail collection boxes in some 200 cities nationwide in a special covering to look like R2-D2. It's part of a promotion for a new stamp to be announced March 28, Anita T. Bizzotto, the post office's chief marketing officer, said. "It's a little teaser for the upcoming announcement and we decided to have a little fun with it," she said. About 400 mailboxes will be covered to look like the stout droid. "When you look at a mailbox, the resemblance to R2-D2 is too good to pass up," Bizzotto said. While postal officials would like people to look for these mailboxes and maybe even drop in a letter, Bizzotto urged people not to tamper with them, noting that's a crime.