Dexter You can "dexterize" yourself by going to the photo booth and putting your self into Dexter's shoes. You can then share the picture with your friends. Also, you can keep track of the show by viewing episode guides and interviews.
Dexter Soundboard This is a place where you could get some of your favorite Dexter quotes and set them as notification and ringtones.
Dexter Morgan Bgan This app allows you to set Dexter themed pictures to you're phone. It's all about customizing.