All but boring these wall-mounted bookshelves are! Perhaps you are thinking they'd fit perfectly on a wall of a man cave, but rest assured, the more wonderfully geekish lady lairs wouldn't shy away from these either.
Who is your favourite fictional character? Superman, Captain America? Agents of S.H.I.E.L.D? We know, Wonder Woman! Inspired by their instantly recognizable emblems, even your books will look mightier placed on a, let's say, Superman bookshelf. True, you might encounter some challenges organizing items on those curves, but using a little imagination (superglue as well, perhaps?) everything is doable and it the end, it's well worth the effort.
The bookshelves come in various colour variations, or just in simple white or black.