Project Icarus is an ambitious five-year study into launching an unmanned spacecraft to an interstellar destination. Headed by the Tau Zero Foundation and the British Interplanetary Society, a non-profit group of scientists dedicated to interstellar spaceflight, Icarus is working to develop a spacecraft that can travel to a nearby star.
The articles discuss Project Icarus (of course), its predecessor Project Daedalus, and even how today's propulsion technologies would fit it. There is one particularly interesting graphic showing a Saturn V next to the Project Daedalus' nozzle. See the left sidebar.