Here's an interesting one we found recently....
http://www.ufocat.com/index.html

And this is always a good little updates one....
http://www.ufostoday.com/

And this was new to us....
http://www.ufo.it/english/ufo1d.htm

Also, we don't know if this person's encounter was real or not.
But his art is amazing .......
http://www.fascinationoforchids.com/doug/nature1.htm


Enjoy.