I use Lock Me Lite, it's a simple program that has a percentage counter that increases as you swipe you finger down the screen, its a light weight and responsive app.
http://forum.xda-developers.com/showthread.php?t=478606
The only problems are that the clock is only in 24hr mode and has some slight rendering problems in landscape =T
Other than that, it prompts unread messages for both email and text, and missed calls.