Of all my hand tools, my favorite is a Veritas router plane. Holy cow, that thing is a work of art. And using it is so much fun, it will flatten the bottom of a dado or groove like nothing else. And it can also be used with an attachment for cutting inlays. Perfect depth control even for small hinges. There's a miniature one available as well. Here's a pix. Kinda sexy lookin' huh. The second pix is the inlay cutter kit. The pull action gives you incredible control.
The more I do, the less I accomplish.