For a boy, I like Corban. It means "a gift devoted to God" in Hebrew. Along more conventional lines, I like Thomas and Timothy, but the problem is I don't like the nicknames Tim, Tom, Timmy or Tommy.
Speaking of nicknames, I'd also like to use Jack, not John, just Jack, in honor of my hero C.S. Lewis. Also, Wayne, in honor of my other hero Rich Mullins (that was his middle name and what family called him).
My list for girls isn't as long, but it's quite unusual. I like Siobhan (Gaelic version of Joan, pronounced shiv-onne, meaning "God is gracious") and, though it technically isn't a name at all, Verity (a little-used word referring to a certainty or absolute truth). Combining Irish themes with the theme of non-name words used as names, I think Lorica would be a really pretty girl's name, in honor of the "St. Patrick's Breastplate" prayer.