Interarchy, the venerable FTP client, has been updated today. Version 8.2 isn't groundbreaking, but it does include a number of nifty new features. The biggest feature, to me, is support for Growl (I do love Growl so). Also added are file converters which can covert files whilst downloading or uploading, and Leopard compatibility.
Interarchy costs $59.95, though a demo is available.