Via MetaFilter (original discussion thread), the Hungary-based ‘AlertMap’, a service that shows current events in a “Google Maps” map. Not really original, but effective and (as it seems) close to ‘real-time’1.
I need to add that the AlertMap heavily relies on Javascript: it works like a charm on Firefox and IE, but it doesn’t in Opera. Opera users are presented with a ‘boring’ event list and even that list seem to come with plenty of CSS errors.
1 Notice the appropriate quoting of the word ‘real-time’.