David Ashman recently updated LockInfo.
This is by far one of the best Jailbroke apps ever!
I love it!
It enables me to access Twitter, calendar, weather, SMS/mail/missed calls and loads of other things right from my lock screen
You can even hide it by double tapping the status bar.
Info shade allows you to access it from any app. Even the home screen.
It is compatible with QuickReply so I can reply to an SMS without having unlock or even leave the current app.
SnowCover is just a iPod skin for the lock screen. It also alows for gestures to pause, change volume and even tracks
All of these are availble from cydia on the BigBoss and ModMyI repos.
Stimpy5050 on twitter