INTRODUCTION This began as some documentation Erik Schnetter wrote for the Penn State Maya code. I wanted to enter some more simple sample (3+1 splits of) exact space-times. It you see an obvious error, or have something to suggest, let me know. There is, of course, a definite bias towards black hole space-times. I may add cosmological ones when/if I get the chance. A few words about notation: In what follows, Greek indices such as α, β, μ, ν are four-vector indices and run from 0 to 3. Latin indices such as i, j, k, l, m, n are three-vector indices and run from 1 to 3. When using spherical polar coordinates, in general R will denote the standard “areal” radial coordinate; when dealing with a conformally flat solution, I’ll use r to denote the radial coordinate, as then it will _not_ be areal. Additionally, I often use the letter q to denote the cylindrical polar quantity $ = r \, \sin\theta$; most references I know use the Greek letter ρ for this purpose, but I’ve found ρ to be used for too many other purposes.