UFOs and Such

What do you think, really? Do you believe close encounters of the alien kind have been happening here on our home planet, as some media are reporting? 

There have always been those super out-there believers, and the web now allows them to build many amazing websites. There are those intended to serve as "welcome home" landing pages for our intergalactic brethren, and those that warn of interplanetary threats, cautioning we will make great pets or become super tasty meals if we do not wise up and get ready to resist impending alien invasions. Warnings don't just come from tin-foil hat wearing types; Stephen Hawking recently put in his two cents regarding "don't talk to strangers (from other planets.)"The Royal Society in London recently hosted a conference on the topic of alien encounters, "Is There Anybody Out There?" 

Meanwhile, in several areas around the world there are media reports that pop up citing close encounters sourced by supposedly highly reliable military personnel, confirmed by corroborating data such as radar reports or concurrent civilian sightings. 

The latest of these reports, on the AOL home page today, references some "evidence" of UFOs tampering with military nukes. Yikes.

Okay, I am familiar with the "dog ate my homework"-sort of excuses for screwing up; I've used that on occasion myself. But if these military guys are the ones actually turning the nukes on and off for kicks (or by accident) and then blaming it on the aliens--well, that may be more scary than aliens. 

All scoffing and skepticism aside, what do you think? Have you ever had an actual, impossible-to-dismiss-as-something-else UFO sighting?