If you are tired of the mundane and are ready for some easy lockscreen customization you should definitely check out MagicLocker from the market. It is free and the themes for it are free too. Some of their custom lockscreens include a sense style lockscreen "HTC Sense3", a Samsung Galaxy S style lockscreen "Samsung GS", even an IOS style lockscreen "Iphone" for the two of you that want it . You can use their built in wallpaper or you can choose your own! The themes are easily interchanged in the apps settings.
Grab the app here: https://market.android.com/details?i...=search_result (FREE)
Grab Lockscreen themes here: https://market.android.com/search?q=...me&so=1&c=apps (FREE)