I create UTF-8 encoded *.tex files computationally and "debug" them in TeXnicCenter. Special characters are displayed wrongly. Seems like the editor does not recognize UTF-8.
My files don't have a Byte-Order-Mark set, but if I add it manually in another editor, TC also displays the BOM as characters.
Anyway the compilation works fine with the inputenc package and without BOM. All special characters are displayed correctly.