I'll admit that I didn't really spend a lot of time trying to get Frazier to wave or clap his hands or sign until recently...but in my defense, he wasn't really interested in doing any of the above until recently. Either way, he waves now! And here's proof:
That's also the sign for milk, by the way...but I'm pretty sure this was just a two handed wave.
The night after he got the waving thing down, he was up from 2-3am...just practicing waving in bed! :)