Laura and Craig from The Makerista take these Billy bookshelves that we've all seen before and transform them into what looks like an entire built-in wall unit. This really is the most impressive DIY IKEA renovation I've seen yet.
They knew they didn't want to remove any of the hundred year old crown molding and they knew that almost nothing in their house was level, so this entire unit has been built around it all for relatively easy removal.
Additionally, the entire unit was secured to 2×4's against the wall with shims to make everything level.
And voila! In particular I'm a super fan of the sliding ladder, which immediately ups the impression of the entire room.