I got a magic trackpad as a gift... didn't plan on using it much. However, since I do a great deal of my daily computing on my macbook, it was only natural to use the trackpad with my iMac as well. I positioned the trackpad in front of my keyboard, just like a macbook. I also dremeled a hole in my keyboard tray to allow the trackpad to sit flush with the keyboard and not angled. See photo.