Your spreadsheet experiences

Just interested in your spreadsheet experiences, opinions and so on.

I've used visicalc (just for fun - it was obsolete when i used it),
Lotus 1-2-3 for DOS and some clones, then Excel 5 for Win 3.1, Lotus
for Win 95 and since then Excel 95/97/2000/xp.   Elswhere i've used
gnumeric, kspread and a couple of other open source spreadsheets.

I hear Quattro is pretty good, i've no experience of it.

There's not much traffic on this group - perhaps because Excel is so
all pervasive now (and, IMO, it is really good - but not so good it
deserves to be the *only* one!).

The group's faq is a good resource, thanks to author/s.

Anyone tried programming a spreadsheet ( as in developing one, not
using a macro language )?  If you've used Turbo C (ver 3 IIRC) you
might have played with that example project, which yields a useful
little spreadsheet!