Theres definatly something out there...i mean, if there wasnt then there would be no intelligent species in the entire universe, cause humans definatly arn't intelligent. But seriously, of course theres other life out there...it'd just be dumb not to believe what with the universe being the size it is, what makes you think this universe isnt just a bacteria on some aliens arm or.....(heh heh) a marble! (go Men in Black! :D ).
I agree with the ufo thing....a ufo is just that: unidentified flying object. No where in the sentence does it say it has to be a spaceship......it could be a paper dart some imbicle threw (probably me :D )