Index: trunk/grails-app/conf/Config.groovy
===================================================================
--- trunk/grails-app/conf/Config.groovy	(revision 155)
+++ trunk/grails-app/conf/Config.groovy	(revision 165)
@@ -19,4 +19,8 @@
                       css: 'text/css',
                       csv: 'text/csv',
+                      pdf: 'application/pdf',
+                      rtf: 'application/rtf',
+                      excel: 'application/vnd.ms-excel',
+                      ods: 'application/vnd.oasis.opendocument.spreadsheet',
                       all: '*/*',
                       json: ['application/json','text/json'],