Calligraphy is a fantastic form of art, and useful a lot of times, especially for invitations and stuff like that
I used to use fountain pens, and enjoy them quite a bit. But, I also lose them on regular bases, and even the cheap ones cost around 5 euro each...
Therefore, I generally use roller-ball pens and such for writing.
For art and calligraphy on the other hand I use a dip pen and nib, quill, glass pen, or calligraphy brush.
Windsor and Newton shellac-based India ink are great for calligraphy.