What I want to do in the parlor

Built-in bookcases, how-to courtesy of the ever-bountiful Popular Mechanics. Wouldn't something like this look really good? The only problem there is the 12-foot ceilings. If I take the shelving all the way up, I can't get to most of it, but if I don't, what do I do at the top?

There's also an excellent how-to for a standalone bookcase. Also, not a propos of bookcases but still useful, pro tips on crown molding. Thus concludes my Popular Mechanics link dump.