There has been some really interesting pieces written on worship of late.
Please do check out this really awesome article by Dan Wilt on the rise of the worship artisan
Jason wrote a great article on recovering liturgy and ritual in the emerging church
I've written about exploring worship (including the singing) and the emerging church
And for a practical/experiental example of deep church practised in the community of our church: Vineyard Sutton: Marc has posted the ash wednesday service that we participated in last night and Jason and I have posted our reactions/experiences/actions as a result of that service