I find Nextgen to be the near perfect image gallery manager ever.
However, I couldn't manage to show pictures of the posts gallery in the Post RSS feed.
This would be great for enabling Google Reader users (and others) to see the images on the feeds.
Also, I believe this is what's missing for getting them indexed by Google Images: http://wordpress.org/support/topic/177830
I don't know how to do this, but I believe it will solve two problems with one solution:
if google rss reader sees it, then it will (hopefully) be indexed.