Springtomize is the only tweak you'll ever need to customize your device, in all of its aspects. Read the documentation for the full description of every feature.
SMS+is the best solution to improve your SMS experience on iOS. It integrates perfectly in the native SMS application, adding to it those functionalities you won't ever be able to stay without after having tried them.
SlideAway brings substance to your iPhone's lockscreen: launch apps from the bar and the slide up dock and control your notifications, everything with a fully theme-able (more than 10 themes already available in Cydia) interface that perfectly fits your Lockscreen. SlideAway is also compatible with the most popular lockscreen addon, like LSRotator and LockInfo.
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CleverPin allows you to make your iPhone ask for passcode intelligently: you can choose to automatically disable it while you're connected to your home network (more than one network supported, add the network you're connected to with only 1 tap), listening music or charging battery, or even during specified periods of time.
FreeSync allows you to use your Device while it's syncing with iTunes, in style.
MyVolume the tweak that finally allows you to manage your iDevice's volume like a pro.
Nowplaying for Tweetbot adds the "Tweet playing song" feature to Tweetbot.
PastieBot lets you post tweets longer than 140 characters, via pastie.org.