When playing over say a static Gmin7,you can extract these little voicings and play them rather than just playing one chord in one place. These voices are extracts of Gmin7 (Dorian) or as some people know it as the notes of Fmajor over Gmin7.Try and learn these shapes,they are pretty useful :)

https://docs.google.com/open?id=0B5qJqMU7g1nHMlB4M2FmUXpXSnM