diff --git a/core/src/main/java/hudson/model/Job.java b/core/src/main/java/hudson/model/Job.java
index b4135ddb8bdf501207591cbb11287fdf1d657f68..79a0d813cf90703bdac567e05c1291a30f76f6d6 100644
--- a/core/src/main/java/hudson/model/Job.java
+++ b/core/src/main/java/hudson/model/Job.java
@@ -790,6 +790,34 @@ public abstract class Job<JobT extends Job<JobT, RunT>, RunT extends Run<JobT, R
         return r;
     }
 
+    /**
+     * Returns the last build that was anything but stable, if any. Otherwise null.
+     * @see #getLastSuccessfulBuild
+     */
+    @Exported
+    @QuickSilver
+    public RunT getLastUnsuccessfulBuild() {
+        RunT r = getLastBuild();
+        while (r != null
+                && (r.isBuilding() || r.getResult() == Result.SUCCESS))
+            r = r.getPreviousBuild();
+        return r;
+    }
+
+    /**
+     * Returns the last unstable build, if any. Otherwise null.
+     * @see #getLastSuccessfulBuild
+     */
+    @Exported
+    @QuickSilver
+    public RunT getLastUnstableBuild() {
+        RunT r = getLastBuild();
+        while (r != null
+                && (r.isBuilding() || r.getResult() != Result.UNSTABLE))
+            r = r.getPreviousBuild();
+        return r;
+    }
+
     /**
      * Returns the last stable build, if any. Otherwise null.
      * @see #getLastSuccessfulBuild
diff --git a/core/src/main/java/hudson/model/PermalinkProjectAction.java b/core/src/main/java/hudson/model/PermalinkProjectAction.java
index da0bd533434c2a06b9d7aabff56d196389721e0d..2d2baf7e089213346bda88c1d0e70544b0b43e61 100644
--- a/core/src/main/java/hudson/model/PermalinkProjectAction.java
+++ b/core/src/main/java/hudson/model/PermalinkProjectAction.java
@@ -146,6 +146,34 @@ public interface PermalinkProjectAction extends Action {
                     return job.getLastFailedBuild();
                 }
             });
+
+            BUILTIN.add(new Permalink() {
+                public String getDisplayName() {
+                    return Messages.Permalink_LastUnstableBuild();
+                }
+
+                public String getId() {
+                    return "lastUnstableBuild";
+                }
+
+                public Run<?,?> resolve(Job<?,?> job) {
+                    return job.getLastUnstableBuild();
+                }
+            });
+
+            BUILTIN.add(new Permalink() {
+                public String getDisplayName() {
+                    return Messages.Permalink_LastUnsuccessfulBuild();
+                }
+
+                public String getId() {
+                    return "lastUnsuccessfulBuild";
+                }
+
+                public Run<?,?> resolve(Job<?,?> job) {
+                    return job.getLastUnsuccessfulBuild();
+                }
+            });
         }
     }
 }
diff --git a/core/src/main/resources/hudson/model/Messages.properties b/core/src/main/resources/hudson/model/Messages.properties
index 6b0a092d34eb0b6b3b5503b94b17ca26d1eec6c2..c499ae8e0e6a8bb71f0bf468c56fd013ef158025 100644
--- a/core/src/main/resources/hudson/model/Messages.properties
+++ b/core/src/main/resources/hudson/model/Messages.properties
@@ -232,6 +232,8 @@ UpdateCenter.PluginCategory.unrecognized=Misc ({0})
 
 Permalink.LastBuild=Last build
 Permalink.LastStableBuild=Last stable build
+Permalink.LastUnstableBuild=Last unstable build
+Permalink.LastUnsuccessfulBuild=Last unsuccessful build
 Permalink.LastSuccessfulBuild=Last successful build
 Permalink.LastFailedBuild=Last failed build