Incorporating doesn't give any specific copyright protections.
Neither the corporation nor its products would be protected by copyright. They do, however, control a number of trademarks.
Unless otherwise specified, everything you encounter on the internet is protected by copyright. For example, you will see at the bottom of this page that it is copyright 2011 Answers Corporation.
No. You could copyright a drawing or photograph of the logo but the logo itself would have to be protected as a trademark.
Individual words are not protected by copyright.
Yes.
Yes. All of the photos taken in the movie are protected by copyright.
Once a work of sufficient originality is fixed in a tangible medium, it is automatically protected by copyright.
Short phrases cannot be protected by copyright, but there are several registered trademarks for that phrase.
Yes; architectural works are protected.
The 1952 movie is protected by copyright, and will likely be protected through 2047.
The physical tape is not protected by copyright; the content on it probably is. Commercially produced tapes are certainly protected.
The content of a presentation is protected by copyright as soon as it is "fixed."