Having now fully recovered from her recent back injury, Ellen DeGeneres has rescheduled for this Friday a special installment of her talk show to be taped aboard a Delta 767-400 flight from Los Angeles to New York. Lucky passengers - including, coincidentally, West Wing alum Allison Janney - will be entertained by the host, a definite upgrade from the usual flimsy airline headphones paired with an in-flight presentation of Catch and Release. Ellen's airborne eppy airs Tuesday.