Note: While the last "balance" is the accurate number of bitcoins available to this address, it is likely not the balance available to this person. Every time a transaction is sent, some bitcoins are usually sent back to yourself at a new address (not included in the Bitcoin UI), which makes the balance of a single address misleading. See the wiki for more info on transactions.

e77951ed50... Block 170208 (2012-03-08 15:59:56) 9.999 Received: Address 9.999
97142555ca... Block 174674 (2012-04-07 17:27:36) 9.999 Sent: Address 0