Nice artical, I must admit i'm still a fan of detatching the databases to move files as I tend to only do this on maintenance windows so the amount of time it takes me isn't an issue (plus i'm prone to the odd typ0).

One other thing, prob obvious to most readers, is that you can't do this method if your moiving the master or resource databases MS has an artical on this at http://msdn.microsoft.com/en-us/library/ms345408%28v=sql.90%29.aspx this one is for 2005 but the other versions are available using the other version drop down.