Building The Impossible: The Roman War Machine World, 10pm From the tombs of ancient Egypt to the first submarine, history is littered with brilliant and bizarre design concepts. Building The Impossible challenges a team of experts to re-create legendary ideas and ancient inventions - and make them work. In the four programmes materials scientist Dr Caroline Baillie and structural engineer Professor Chris Wise (both above) attempt to take on the impossible. Against the clock and using as few modern aids as possible, they try to build some of the most extraordinary constructions history has to offer. The pair have to follow whatever original information they can find, be it a single sketch, a historial account or archaeological discoveries and, as far as possible, they must use only the knowledge and technology that was available at the relevant time in history. Savage Planet: The Methane Bomb Pearl, 9.30pm For 13 years, geologist Alan Judd (above) has been trying to solve an enigma that has haunted seafarers for centuries - the mysterious loss of ships around the world. Judd believes bubbles of methane gas escaping from the seabed can reduce the sea's buoyancy and sink ships and oil rigs. He thinks that this theory not only explains the Bermuda Triangle but also the legend of the Loch Ness monster. Antitrust Star Movies, 9pm Milo Hoffman (Ryan Phillippe) and Teddy (Yee Jee Tso) intend to form an internet start-up company and take the world by storm. That all changes when Milo is courted by software magnate Gary Winston (Tim Robbins), the immensely wealthy head of world-dominating, Portland-based company, NURV. Milo takes the bait, leaving Teddy behind. Arriving in Portland to a NURV-provided house and car, with his girlfriend (Claire Forlani) in tow, Milo finds himself working on Winston's master plan - software that will link the world's communications devices together. But it's not long before Milo begins to uncover disturbing evidence of Winston's unethical and brutal business tactics. When Winston's web of violence touches Milo's world, he joins forces with fellow NURV programmer, Lisa (Rachael Leigh Cook, above with Phillippe), and sets out to tell the world of Winston's reprehensible practices. Living Golf CNNI, 8.30pm Living Golf crosses two time zones as it swings from Lapland to the United States, meeting a remarkable trio of golfers, Gary Player, Colin Montgomerie and Sam Torrance along the way.