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.

6b3f3bd655... Block 161072 (2012-01-07 12:59:03) 14.36 Received: Address 14.36
fb31af6520... Block 161449 (2012-01-09 19:39:06) 14.36 Sent: Address 0
8c499eb066... Block 177979 (2012-04-30 20:27:37) 26.59 Received: Address 26.59
7755589042... Block 177991 (2012-04-30 21:27:19) 26.59 Sent: Address 0