Well I must say, I am a fan of UFOs and aliens. Lots of government scientists came out and said that the government knows about UFOs and aliens and can't explain them. Britain actually just released it's seventh batch of UFO files with 8,000 pages of reports as a segment of their timed release of UFO info. I personally believe that is more plausible that the aliens are probably from a different dimension or different time rather then planet being that we are so far from a habitable planet but who knows, it is also very pretty far fetched to go between dimensions or time. Here is a video talking about what was released in the British UFO files.
Also Jerusalem had a recent experience with a UFO which can be seen in this video. It is two separate angles from two different witnesses synchronized. A third video was released but it turned out to be a fake. Some people speculate it was made by government agents to create question about the ufo sightings but who knows.