One of the first things I do when creating a new application is enabling the feedback mechanism in combination with Team Development.
Click the Create Page button in Application Builder and select "Feedback Page":
The next step looks like this:
The Page Mode can now be set to Modal, so instead of a popup it will render as a modal.
Note that in the EA1 version there are some known issues with the Feedback Page, which will be resolved in one of the next iterations of EA.
One issue made me think that once I upgraded my applications to APEX 5.0 I probably want to start searching for "apex.navigation.popup.url" and change those to become the native APEX 5.0 modal windows. It's those "small" things like declarative modal windows which make a big difference in development effort and clean code. But more on modal windows in a dedicated post.
I love the Feedback mechanism and how it integrates with Team Development, but if it had one more feature, I would be thrilled. It's great to know session state, it's great people can add a comment, but sometimes a picture shows more than a 1000 words. So if we could click a button that took a screen capture and we could annotate that... wouldn't that be awesome? The result would be an image with the feedback in Team Development.
Some of us in the community build some custom solutions to do that. For example Martin and I "hacked something together" for the OSN-competition at OOW which did the screen capture and annotation, but having such a feature native in APEX and integrated with Team Development would be even better :)