Index: /Users/jeffbrown/Documents/workspace/groovy/src/main/org/codehaus/groovy/runtime/DefaultGroovyMethods.java
===================================================================
--- /Users/jeffbrown/Documents/workspace/groovy/src/main/org/codehaus/groovy/runtime/DefaultGroovyMethods.java	(revision 5332)
+++ /Users/jeffbrown/Documents/workspace/groovy/src/main/org/codehaus/groovy/runtime/DefaultGroovyMethods.java	(working copy)
@@ -264,9 +264,10 @@
 
     /**
      * Scoped use method
+     * @return the value returned from the closure
      */
-    public static void use(Object self, Class categoryClass, Closure closure) {
-        GroovyCategorySupport.use(categoryClass, closure);
+    public static Object use(Object self, Class categoryClass, Closure closure) {
+        return GroovyCategorySupport.use(categoryClass, closure);
     }
 
     /**
@@ -271,9 +272,10 @@
 
     /**
      * Scoped use method with list of categories
+     * @return the value returned from the closure
      */
-    public static void use(Object self, List categoryClassList, Closure closure) {
-        GroovyCategorySupport.use(categoryClassList, closure);
+    public static Object use(Object self, List categoryClassList, Closure closure) {
+        return GroovyCategorySupport.use(categoryClassList, closure);
     }
 
     /**
@@ -294,8 +296,9 @@
      *
      * @param self
      * @param array
+     * @return the value returned from the closure
      */
-    public static void use(Object self, Object[] array) {
+    public static Object use(Object self, Object[] array) {
         if (array.length < 2)
             throw new IllegalArgumentException(
                     "Expecting at least 2 arguments, a category class and a Closure");
@@ -308,7 +311,7 @@
         List list = new ArrayList(array.length - 1);
         for (int i = 0; i < array.length - 1; ++i)
             list.add(array[i]);
-        GroovyCategorySupport.use(list, closure);
+        return GroovyCategorySupport.use(list, closure);
     }
 
     /**
Index: /Users/jeffbrown/Documents/workspace/groovy/src/main/org/codehaus/groovy/runtime/GroovyCategorySupport.java
===================================================================
--- /Users/jeffbrown/Documents/workspace/groovy/src/main/org/codehaus/groovy/runtime/GroovyCategorySupport.java	(revision 5332)
+++ /Users/jeffbrown/Documents/workspace/groovy/src/main/org/codehaus/groovy/runtime/GroovyCategorySupport.java	(working copy)
@@ -141,12 +141,13 @@
      *
      * @param categoryClass the class containing category methods
 	 * @param closure the closure during which to make the category class methods available
+	 * @return the value returned from the closure
 	 */
-	public static void use(Class categoryClass, Closure closure) {
+	public static Object use(Class categoryClass, Closure closure) {
 		newScope();
 		try {
 			use(categoryClass);
-			closure.call();
+			return closure.call();
 		} finally {
 			endScope();
 		}
@@ -157,8 +158,9 @@
      *
      * @param categoryClasses the list of classes containing category methods
      * @param closure the closure during which to make the category class methods available
+	 * @return the value returned from the closure
      */
-    public static void use(List categoryClasses, Closure closure) {
+    public static Object use(List categoryClasses, Closure closure) {
         newScope();
         try {
             for (Iterator i = categoryClasses.iterator(); i.hasNext(); ) {
@@ -165,7 +167,7 @@
                 Class clazz = (Class) i.next();
                 use(clazz);
             }
-            closure.call();
+            return closure.call();
         } finally {
             endScope();
         }
Index: /Users/jeffbrown/Documents/workspace/groovy/src/test/groovy/CategoryTest.groovy
===================================================================
--- /Users/jeffbrown/Documents/workspace/groovy/src/test/groovy/CategoryTest.groovy	(revision 5332)
+++ /Users/jeffbrown/Documents/workspace/groovy/src/test/groovy/CategoryTest.groovy	(working copy)
@@ -19,7 +19,13 @@
     }
     shouldFail(MissingMethodException, { "Sam".lower() });
   }
-  
+
+  void testReturnValue() {
+	  def returnValue = use(StringCategory) {
+		  "Green Eggs And Ham".lower()
+	  }
+	  assert "green eggs and ham" == returnValue
+  }
   void testCategoryDefinedProperties() {
 
     use(CategoryTestPropertyCategory) {