Well, Alia can pretty much sit up now. She doesn't get there by herself, but she can hold herself up now. It's then fun to watch her fall back over when she gets tired or distracted (as long as she isn't falling into anything). She also thinks its fun to fall over backward, especially when I have the big pillow behind her.
She also is becoming quite mobile without crawling. She rolls and rotates and scoots backward, and pulls herself forward on blankets. As soon as she starts crawling, you know there will be a video.