Welcome back to another installment of "Where Pilots Go to Die." Last time, I took a look at the CW's underwater drama Aquaman / Mercy Reef which failed to make it onto the CW's fall schedule. I have a fascination with series that don't go any further than the pilot stage. So imagine my excitement when a copy of CBS's dead pilot Ultra ended up in my greedy little hands. When I first heard of the project a few months ago, I was surprised to learn that CBS was developing a series based on Jonathan and Joshua Luna's superb comic of the same name ("Ultra: Seven Days"). I was even more surprised to discover that other than sharing a title, the two projects had nothing in common whatsoever... The Luna Brothers ' "Ultra: Seven Days" (pictured below) is a smart, edgy, sophisticated comic that's rather like Sex and the City ... with superpowers. It recounts the story of Pearl Penalosa, a sexy Latina superhero with the codename of Ultr