Here are a few videos of Sarah showing off some new tricks.  First, peekaboo (video from 6/2):

https://www.youtube.com/watch?v=yDsFLDa4xXQ&feature=youtu.be

Next, saying hello (6/8).  Sarah waves at everyone she sees now:

https://www.youtube.com/watch?v=aG90wp52Lhk&feature=youtu.be

Really, she goes through all her new tricks in rapid succession at every opportunity, like so (6/10):

http://youtu.be/_sq4vdL7n6A