I've only had my captivate for four days now, its my first smartphone and I'm loving it! I recently rooted it, and finally got done with this windows 7 phone-like theme. I think its looking pretty cool. First one is my home screen, and the next two are to the left and right of the home screen.
That's the Debudding Mode indicator. On stock Samsung TouchWiz the same indicator shows up as a red triangle.
Heres Mine:
(can you tell i loved my Stock Nexus One)