We should have a thread where we can go and ask questions about apps or the name of apps that we are looking for but can't remember the name. (Asbestos suit on just incase this is a bad idea.) I will go first.
What is the name of the app that you can block calls, you can look up numbers from your contact list and block them and you can block unknown or restricted calls? It might send them automaticlly to your voicemail. It isn't "Full Screen Caller PictureID and callerID blocking" (I think that is for the Storm anyway)