From what I've heard an amateur treasure hunter came across a huge 177 ounce gold nugget in Asutralia: http://www.bbc.co.uk/news/world-asia-21055206 Oooh... That's a great find! Delicious! It's worth in excess of 300,000 US $... The guy must be feeling great!
4th one? I checked whether someone posted this already... perhaps it happened earlier and got buried... didn't know. I only found out about it 30-45 minutes ago!