.. and take someone 4 weeks to sort it out after you leave :)
Seriously though - it's about using macros when basic excel functionality is better and easier.
And creating templates and models that everyone understands.
I'm not an Excel wizard - but a computer scientist by education. So I know my way round it if you get my drift.
I'm just designed an Excel course with help and had the first pilot last week. Basically take a bog standard course - rip out the examples and put your own in. In my world it was...