In my dealings with customers who have implemented SharePoint, the number one complaint that always surfaces is poor navigation within a site collection. Jan Tielens has created a Navigation web part that is just what the doctor ordered. I’ve always had this on my list as something to build, but I’ve just never got around to it.
He has also written a very useful MyAlerts web part for use on individual WSS sites. As you may know, the portal and your My Site page has My Alerts web parts, but there’s nothing similar for sites – you have to go to Site Settings to view your alerts. But the best feature of all is the ability to use this web part to add an alert to ALL lists on that site!
You can download these web parts at http://weblogs.asp.net/jan/archive/2004/02/12/72079.aspx. Good work Jan!