I mean like in these videos(layer mask clipping, special effects, etc.)
or any easier way to do them
http://www.youtube.com/watch?v=3rJgT-OXqho
http://www.youtube.com/watch?v=kXQ2EJz3uuM
http://www.youtube.com/watch?v=JA115-mLUc4
http://www.youtube.com/watch?v=Qugz1g5MxtQ