Space.com <a href="http://www.space.com/businesstechnology/technology/antimatter_sail_021029.html">has an article</a> on using anti-matter for propulsion in space. It isn't true Star Trek warp stuff, in fact it is a variation on an fusion based pellet design I saw in the late 70's, but interesting concept. The concept is still somewhat of a dream, as stated in the article: 'The real hub is the storage [of antimatter]. There's a lot of technology between here and there.' Later on it also mentions that we can't produce a lot of antimatter efficiently yet. Still it might be worth the effort if the theoretical acceleration proves out." Also, <a href="http://news.bbc.co.uk/1/hi/sci/tech/2375717.stm">the BBC has a story</a> about studying antimatter in a lab.