Hey there! Very nice reel overall. One thing I think you need to work on is moving holds. Right now most all your characters, at one point or another, become totally frozen. They go from one pose to another and freeze. This pretty much never happens in real life, so it looks kinda weird and distracting. In the first clip I found myself looking at the guy in the foreground more than the moving guy playing the piano because he was just staying too perfectly still.
This problem can pretty much be eliminated if you go in and smooth out your animation curves, and tweak and add a few keys. Other than that, you've got some really good clips in there. I'm no expert in animation so I can't critique those very much, nice lipsync and timing and such.
--Colin