Olivia has FINALLY started opening her mouth when she watches me eat, and she's showing all of the other signs such as supported sitting (almost unsupported sitting), holding her head up, and letting me know when she's full. So I decided that it was time to try cereal. I also hoped that it would help her sleep through the night, but that was pushing it a little. Here is the video: (it's really long, sorry!)
At first, she wasn't too sure about it, but by the end she was kicking, smiling, and grabbing my hands to feed her faster. I love this kid!