hey there.
I have a USA event site project about 95% done called eventannounce.
http://www.eventannounce.com
The site is a events aggregator for the US and aggregates events from upcoming.org every day there are 100+ events added to the db.
Our current db has 11,252 events listed todate.
The site is integrated with google maps for every event and provides a location map on events.
I discontinued this project due to lack of interest there are only a few things remaining to be finished like socialbookmarking and static pages for support and contact.
let me know if you are interested.