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.

79bb13e080... Block 166748 (2012-02-14 09:16:27) 10 Received: Address 10
ad830e3e68... Block 166778 (2012-02-14 15:01:44) 10 Sent: Address 0
b2e4c49029... Block 171391 (2012-03-16 12:42:12) 8.19 Received: Address 8.19
37255a6a01... Block 171470 (2012-03-17 00:20:17) 8.19 Sent: Address 0