As much as Jake hates it, I've got a new project brewing. We have some really sloppy paint in our long and skinny hallway. With popcorn ceilings, it's hard to get wall paint neatly applied in the corners AND the previous homeowners did a cruddy paint job. Sadly, it's a bit of a wreck. Solution! Crown moulding! But, its a little scary to put up. My Google-fu revealed high-density foam crown molding is available via vendors such as SoSimpleCrown.
This image is an inspiration, though I think I will stick with white trim for a simple look.
I ordered some samples and am settling on a profile. Hopefully I can attack the bedroom first as a test and report back.