Another solid choice to handle your personal finance, Accounts gives you all the tools to manage your money wisely. While it offers an old interface compared to what we're starting to see nowadays, especially with the upcoming release of Leopard, Accounts is clear and well organized.
It's easy to add and create your accounts. The transactions tab lets you quickly see credits and debits and you can easily reconcile bank and credit accounts by checking them in your list.
Accounts lets you print checks and produce your own invoices, quite useful if you're running your own business. Furthermore Accounts works hand in hand with your contacts in the Mac Address Book, letting you access them directly from the interface.
The program also allows you to write up memos and even generate reports on all your personal finances.
In all, a solid solution to handle all your personal finances on your Mac.