The current WP-2.0 post is amazing. I like the "Upload" and "Browse All" tabs down below. They are great. I have an improvement suggestion.
How about a "Grab" tab - that you can use to insert a URL to an image on the web, give it a local name to store it as (optional) - and then have it use wget or a similar grabbing process to snag the image for you?
I currently use lr2ImageSnag to easily post little title images to my posts - it works great, and uses wget. I think that integrating that same kind of auto-grabber to WordPress would be wonderful. In a future release, I would probably want to add in the ability to specify what size to resize images you snag to (using ImageMagik... etc)
I am a C++/Java programmer, and I'm picking up PHP pretty easily. Would it be possible to make a plugin that would add an additional tab like I am talking about? Any place you can point me to get me started?