For an implementation a bit closer to the old-days sophistication of
stem-and-leaf-plots (see J.D.Emerson & D.C.Hoaglin: "Stem-and-leaf
displays", in "Understanding robust and exploratory data analysis" by
D.C.Hoaglin, F.Mosteller & J.W.Tukey, Wiley, 1983, reprinted 2000),
automated via macro, visit
http://www.mf.uni-lj.si/ibmi-english/biostat-center/index.html
and in the menu on the left click on "Software" (and then scroll to the
bottom of the page).
Direct link is
http://www.mf.uni-lj.si/ibmi-english/biostat-center/programje/excel/StemAndLeafPlot.xls
There you (and others interested in distribution plotting in Excel) can also
find my implementations of windowgrams and coplots, dot plots (simple and
multi-way) and dot-density plots (an extremely simple yet efficient solution
with character-based cell-chart). Additionally, there's a macro for the
Bland-Altman method-comparison chart, and a macro for Kaplan-Meier survival
curve estimation and plotting (both are just improvements of other people's
work).
Best regards,
Gaj