Well, starting Kellan on solids produced somewhat of a similar reaction... until we tried PEAS. During the first few bites, Kellan exhibited his usual apathy to the experience, but then something magical happened - he anticipated a bite and opened his mouth before I had to ask him to "say ahh". It wasn't that he was smiling or bouncing or expressing glee, but the fact that he actually became interested in being fed food was wonderful! And I'm guessing it's a good sign that he likes peas.
(I know in this picture it looks like he doesn't like it, but he still opened his mouth for the next bite)
About as animated as we've seen him about solid food (ha!)