Set your VCR's! No, not for MTV Unplugged.That has been postponed indefintely for unknown reasons. Perhaps because the two parties couldn't agree on a date. Instead, Bruce is scheduled to appear in a TV special to celebrate the 30th anniversary of Rolling Stone magazine. He will allegedly perform "The Ghost of Tom Joad" and "Across the Border" with "a band" (no word on exactly what band). The show will air on ABC on May 21, so prepare yourself.