S

Sharepoint skimmer is a GUI theme creator - very cool - and free.. http://www.elumenotion.com/Blog/Lists/Posts/Post.aspx?ID=4

Socket Send Buffer Length- If you want to know why uploading documents in sharepoint seems to take a long time, change this setting in your registry http://support.microsoft.com/kb/823764

Sync between excel 2007 and SharePoint just like you used to do in excel 2003 http://msdn.microsoft.com/en-us/library/bb462636(office.11).aspx

Very clear description of all things security and to find out where cross site groups went to http://blogs.msdn.com/joelo/archive/2007/06/29/sharepoint-groups-permissions-site-security-and-depreciated-site-groups.aspx

B

Sharepoint backup and restores up and down from the item level http://www.avepoint.com/products/sharepoint-administration/sharepoint-administrator

A handy list of things you can't do in sharepoint but which an inexpensive bamboo web part makes easy.

If you need to create one to many relations between lists

Integrity Roll up up

If you need to aggregate many lists across sites

Cross List Web part

To create bespoke alerts

Alert Plus