Here are some theologians and some "pithy" statements describing their pneumatology.
Enjoy!
Chelle
1. Augustine: The Spirit is the bond of Love between the Father and the Son.
2. Irenaeus: The Son and the Spirit are the two hands of God.
3. St. Basil: The Spirit is the perfecting cause.
4. Richard of St. Victor: The Holy Spirit is the motor outward of God.
5. Wolfhart Pannenberg: The Spirit is a force field. (NOT like on Star Trek!)
6. Jurgen Moltmann: "wherever there is a passion for life, there the Spirit of God is operating" (Karkkainen, Pneumatology, 126)
7. Karl Barth: the Spirit is always in relation to Christ, mediating Christ (the Word of Christ) to people's hearts
8. Clark Pinnock: The Flame of Love OR The sex dude... 
9. John Zizioulas: Eastern Orthodox. The Trinity as an Ontology of Communion. The Spirit and the Son work in parallel: "The work of the Spirit is not the subordinate to the work of the Son, nor is Pentecost a continuation of the incarnation but rather its sequel, its result." (Karkkainen, Pneumatology, 109)
10. Elizabeth Johnson: The Holy Spirit as Sophia, or wisdom.
11. Karl Rahner: The Spirit has a universal orientation. He talks about 'anonymous Christians', as people who are Christians but just don't know it yet. In other words, the Spirit is at work in them.
12. Robert Jenson: Lutheran theologian who believes that the Spirit is moving Christianity back to being one Holy catholic/Catholic Church.
13. Stan Grenz: We are made in the image of God, therefore we have been created for community. The Spirit constitutes and dwells in the Community of God.
14. Elizabeth Schussler-Fiorenza: scholar who rigorously and passionately argues for the recognition of women in the establishing and forming of the Christian tradition. The Holy Spirit moved women into prominent positions in ministry back then, why not today?
15. Mark I. Wallace: Green or Ecological Pneumatology.
16. Karen Baker-Fletcher: The Spirit is at work today in our lives and is the resurrection (as in the resurrection of Jesus) and the resurrecting power (as in for us) of God, even in the darkest places of evil and oppression.