Clearly an encoding issue.
If you reopen the list file, do you see the non-ASCII characters correctly?
I don't actually agree that the "correct" way is to copy-paste from Excel to Notepad. First, that's really fragile (since the default encoding in Notepad is ASCII/ANSI). Second, Marketo supports UTF16LE+BOM (what Excel calls "*.txt") directly. Or you can save to UTF8 directly from Excel using the macro I contributed here: http://blog.teknkl.com/fixing-the-current-excel-marketo-list-import-bug-unicode-characters/