I believe that there is a lot to learn from many in the charismatic movement: their desire to worship God with enthusiasm, using contemporary language; their concern to demonstrate real, practical love to others; and their emphasis on evangelism. I may cringe at some of the methods used, but blanket criticism is not helpful — particularly when I know that so often my worship is cold, my desire to see others saved is non-existent and my love for others superficial.
Regarding one aspect of worship, Exiled Preacher has posted a thoughtful and helpful reflection on "why Reformed believers should not balk at singing hymns by charismatic authors".
I am not happy with much of what goes on under the "charismatic" umbrella. But I recognise that there are genuine godly believers in that movement, men and women who love the gospel. Some are even Calvinistic in their theology. If that is the case, the Spirit is at work in their hearts and lives. He has given these friends the gifts and graces that have produced some wonderful new hymns. If "all things are mine" as a member of the body of Christ, then these hymns are mine to sing just as much as those of Isaac Watts and Vernon Higham.