One of the apps I used to save a ton of time and actually make use of my Android lockscreen is called WidgetLocker Lockscreen, a paid app you can get from the Market for around $2.99.
This app is definitely worth every penny as it allows you to put all your favorite apps within a swipe-reach from your lockscreen.
You can find the WidgetLocker Lockscreen app on the Market, install and open it.
When you open the WidgetLocker app, you will be in “Tool Mode” where you can customize the lockscreen to your liking.
If you do a