They've all got a transaction fee attached to them, so I'm guessing somebody is trying to flood the network with transactions that will be prioritised to slow it down for the rest of us...
EDIT: He's losing 0.03 for every transaction, and the last transaction was at about 40 BTC, so only 1333 transactions to go.
transaction fee does not have any affect on processing speed (yet).
It does, in high volume situations. This person seems to be trying to DOS the network with whatever BTC he has by generating a large amount of 'spam' transactions. Once the blocks fill with high value transactions from him, there would be no more room for free transactions.
There is no transaction fee attached to these spamming transactions. If it had been, the whole chain of transactions would have been cleared in one thick and tasty block and a miner would have gotten a large fee. It's a regular spam that is very low priority and should not slow down anything important.
Yes there is, .03 btc per tx