For those of you who are sporting the latest awesome Galaxy S II SmartPhone from Samsung, an XDA developer has developed an app that allows the "menu" and "back" buttons to light up whenever you receive a new text message, email or missed call. This is good news as you no longer need to unlock your screen to know that there's a notification that you have missed.
This MOD supports firmware/ROMs based on the Android 2.3.3 or Android 2.3.4 but unfortunately it is not compatible with CyanogenMod 7 due to kernel incompatibilities. There are two versions of the BackLight Notifications Mod - the free version works on applications that supports the BLN mod such as Gmail, Go SMS, Handcent SMS, etc. Head on over to the link here to check out the XDA thread and the download links.