Maciej

It happens that it is my first name too. I agree that this name is quite unique, especially in the polish version where the letter "j" is used, the only variation of this name with a "j" letter. ;) However, I personally don't like being called this. I prefer Maciek :/

I like this name and not only because it's mine :-)
Coming from the ancient Hebrew language in this form is typically Polish - nice mix.