Ummm, heres one of my blinking dolls
http://www.thedollpalace.com/members...400 1225400356
The pixels go bit by bit. I don't remember when i did this doll o_o
EDIT: In jasc animating shop theres this option to make the backround transparent, when using photoshop with me there this cool tool that you use you select a certain part of the backround.