Thanks to Bèr Kessels automatic node titles are now configurable. Advanced users can now use a php snippet to define a pattern for automatic node titles. I've also ported the module to 5.x - please test. Update: Jeff Robbins contributed an integration for the great token module to the 5.0 version - that allows to use various node data for the autogenerated title - e.g. use the text of a CCK field. :) There are also some great news from the CCK corner. The fieldgroup module has been integrated into the CCK core and so is now packaged with CCK :)
I've created another tiny module: Automatic Nodetitles It's a small and efficent module that allows hiding of the node title field. To prevent empty node title fields it sets the title to the content type name.