Displaying text as a vertical marquee

["Matt Hoosier" <mwhoosier gmail com>]

Does anybody have some ideas about a clean way to format some text as
a vertical marquee without resorting to Pango layout/font
manipulation? I.e., if "foobar" is the text, then it should be
rendered with the characters stacked one atop the other:

f
o
o
b
a
r

Thanks,
Matt