If you miss the ability of the E71 & E66 to hit the menu key while the phone is locked to display the time, date and other information, Dr Jukka has just come out with a brilliant application called Key Lock Clock that duplicates this functionality. Although the application has been made with S60 5th Edition devices like the N97 and Nokia 5800 in mind, it should work with any S60 3rd Edition handset as well.
Here is an image of my N97 running the application. Since the N97/5800 doesn’t have a screensaver clock of its own, it was a bit of work if you needed to check if you had any missed calls, SMS or simply check the time. With this application all you need to do is hit the menu key while the phone is locked and this gorgeous screen pops up.
This application can additionally also be used as a Table clock when the charger is connected. To enable this feature just set the “Lights on while charging” from the settings. You can even change the brightness of the display and with the N97 in the ‘laptop mode’ this is pretty feasible too.