Now available on Cydia for $1.99, Reveal is a new jailbreak tweak that further enhances the functionality of Apple's new notification system. While Notification Center is a certain improvement over the obtrusive blue boxes that previously plagued iOS, some may argue that the current is a bit limited.
MoneyBook [App Store, $2.99] is a brand new finance app from noidentity and it's absolutely gorgeous. MoneyBook allows you to easily manage your budget using an interface that looks so good, you'll be excited to budget! Simply specify your monthly budget, enter expenses as they come in, and MoneyBook will tell you how much you have left to spend! It supports recurring expenses, spending categories, and can even show you progress over previous months.
If you've found that apps like Cha-Ching were just a tiny bit too complicated for your tastes, MoneyBook might be exactly what you're looking for. I've had a chance to briefly play with it and I'm very impressed. Jump down to check out a video and some screenshots!