While snooping around in Cydia, I found this neat little tweak you can install on your iPhone to have a refreshing new way to unlock the screen:
Pretty neat isn't it? This tweak is called Unfold, which you can get from the BigBoss repository in Cydia (it's included by default, so just search away!). The best part of this neat tweak? It is FREE
Note: To be able to install Unfold, you will need to have Cydia installed. To be able to install Cydia, you'll need a jailbroken iPhone. You can search the web on how to do this. I will not be held responsible if the process of Jailbreaking somehow rewards you with an alumminosilicate glass paperweight.