Nintendo Fonts
While truly not fonts in the file download sense, these are just cut out fonts made from letters which can be used in Paint and made by DS Ultimate members. The best though is this one, Nintendan's Mario font (used in the banner and such like).
To use, copy into Paint and paste each letter as many times you want into the correct order onto the background given. It's not perfect, but it's very good for making Mario titles.