ok who voted no to believing in Aliens? you guys must not have heard of the 'Drake Equation' (Also called Green Bank Formula or Green Bank equation)... roughly it reckons that PER GALAXY there are 2 communicative Civilizations, and a possible 20,000 civilizations, remember the nearest could be 1500 Light Years Away... and given the fact that modern planet searching (seeing if a star wobbles etc...) has upped the chance percentage of a star to have planets etc. to 40% (put simply theres billions of stars in our galaxy alone, 40% may have planets, call it another 1% of them having a form of life etc...... man we are not alone, and i strongly believe that...
as for captured UFO's, Extra-Terrestrial Craft well.... seen a few odd things in my time so far, but until i can see solid cast iron (or whatever they're made of

) proof, i'd have to say not so certain about them...