During early 2008, some folks 'round the globe got started in earnest on a new effort to do birding in a different way, the "BIGBY" (big green big year). See the annual report of the BIGBY folks and their collective efforts in this pdf. Read more about BIGBY at the website, here.
On a related note, read this excellent, thought-provoking (and maybe argument-starting!) article on travel and birding/listing from The Living Bird. (Thanks to Mike McDowell for bringing this to my attention).