At the local household waste site the council had to bring in security guards a couple of years back - because 'rummagers' were actually fighting over their finds.
I often see people rummaging through litter bins for aluminium drink cans - recycling places pay 1p per can.
Also, there's an old guy in the town centre who picks out MacDonalds/half eaten sandwiches etc - to feed to the pigeons, even though its now illegal to feed them.
Me - I'm about to have chicken bone soup made from a carcass I rescued from Pubsingers trash yesterday (before it went in the bin I must add!)!