The "Chet Baker & Strings" album is amazing. The string arrangements make the record sound like one of those pop standard albums of the 40's, but with a more modern and sophisticated approach. It's certainly wonderful.
@Fakyre: Don't worry, his most praised and respected records are precisely those where he sings. And seeing the charts here, they are still his most famous works. I think he doesn't receive the praise he deserves for his overall output, but that's something like an unwritten rule for any jazz musician who isn't Miles Davis or John Coltrane (both deserve it, by the way!)