Special to the Director's Cut By Gary Levin, USA Today NBC considered depicting the failed Jay Leno Show as a mere dream: Promo spots would feature Leno and Victoria Principal in the shower, an homage to the classic Dallas scene in which Principal dreamed the death of her onscreen husband. Instead, the network is opting for a low-key echo of the commercials that launched Leno: Last fall, he was shown driving a race car emblazoned with a 10, a reminder of his new slot. In spots that began airing during the Olympics Wednesday night, he's driving the same car, only the 10 is replaced by 11:35 (or 10:35, depending on your time zone), as the Beatles song urges him to "Get back to where you once belonged." The approach is in marked contrast to the hype - painted buildings, grocery-aisle ads - that greeted his move to prime time last fall. Back then he was heralded on the cover of Time as the "future of television"; on March 1, NBC tries to relaunch Leno i...