As you used to do with Excel 2003.
I just stumble upon this add-in, so forgive me if I am a bit late ;-) (just 2 years)
Synchronising a list with Excel 2003 is very easy out of the box,
but this functionality has been removed in 2007.
An Excel 2007 table can be published but any changes on either Sharepoint or Excel will not be sync in the future.
This.. until Microsoft released this add-in (certainly after thousands of users complained of the loss of functionality).
If your users are on Excel 2007, it may be a must-install plug-in.