Shirt Pocket has released version 2.6 of SuperDuper!, probably the most robust and simplest Mac application for creating bootable backups, bringing full Snow Leopard support to the table. Additional new features include:

• Backup on connect
• Eject after copy
• Sparse bundle support

I’ve personally been waiting for “backup on connect” & “eject after copy” for a while. If you’re going to try Snow Leopard Server anytime soon, I highly suggest using SuperDuper! to create a fully bootable backup of your Leopard Server installation before doing so.