A researcher in Florida claims he is on the path to having a workable flying saucer. It works by ionizing the air around the saucer, causing air currents that provide lift. The best part is that it's all solid state, with no moving parts.
Initially I laughed it off, although apparently this is the culmination of years of government-backed research into this area of fluid dynamics. Now I'm at "I'll-believe-it-when-it-flies".