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.

5bb2d004aa... Block 160753 (2012-01-05 16:51:03) 0.24 Received: Address 0.24
cfe75feade... Block 162353 (2012-01-15 23:39:43) 0.24 Sent: Address 0