Steve already provided some video and pointed out the folded arms of those listening to Obama’s speech in Afghanistan, but the pictures posted by Andrew Malcolm comparing a picture from Obama’s Afghanistan visit…

to one from Bush’s…

…provides a strong visual.
There were plenty of others he could have used as well, like this one, or this one, or these. Can you imagine Barack Obama doing this? Sorry, but I can’t. I am definitely noticing the change. I’m still looking for the hope.
Update: Blackfive shows a similar comparison in video.