Introduction to Workflow Technologies

I know I keep raving on about Workflows in MOSS, but it's my main focus at the minute and I promise I'll move onto other Office-related goodies at some point :) Until then, for those that would like a gentle introduction to Workflows in SharePoint, checkout the post on Mark Harrison's blog giving a link to a document titled "Understanding Workflows in Windows SharePoint Services and the 2007 Microsoft Office Sytem" - it's a decent read !