diff -r f330c3a2dc76 config.def.h
--- a/config.def.h	Tue Mar 25 09:41:14 2008
+++ b/config.def.h	Sat Mar 29 10:27:32 2008
@@ -54,6 +54,7 @@
 	{ MODKEY,			XK_r,		reapply,	NULL },
 	{ MODKEY,			XK_h,		setmfact,	"-0.05" },
 	{ MODKEY,			XK_l,		setmfact,	"+0.05" },
+    { MODKEY,           XK_u,       cycleurgent,    NULL },
 	{ MODKEY,			XK_Return,	zoom,		NULL },
 	{ MODKEY,			XK_Tab,		viewprevtag,	NULL },
 	{ MODKEY|ShiftMask,		XK_c,		killclient,	NULL },
diff -r f330c3a2dc76 dwm.c
--- a/dwm.c	Tue Mar 25 09:41:14 2008
+++ b/dwm.c	Sat Mar 29 10:27:32 2008
@@ -202,6 +202,7 @@
 void updatewmhints(Client *c);
 void view(const char *arg);
 void viewprevtag(const char *arg);	/* views previous selected tags */
+void cycleurgent(const char *arg);
 int xerror(Display *dpy, XErrorEvent *ee);
 int xerrordummy(Display *dpy, XErrorEvent *ee);
 int xerrorstart(Display *dpy, XErrorEvent *ee);
@@ -235,6 +236,9 @@
 Client *clients = NULL;
 Client *sel = NULL;
 Client *stack = NULL;
+Client *initucycle = NULL; /* initiated urgent-cycle */
+Bool *iucprevtags; /* the urgent-cycle initiator's previous tags */
+Bool inucycle = False; /* in urgent-cycle */
 Cursor cursor[CurLast];
 Display *dpy;
 DC dc = {0};
@@ -692,6 +696,7 @@
 		grabbuttons(c, True);
 	}
 	sel = c;
+    inucycle = False;
 	if(c) {
 		XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
 		XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
@@ -1533,6 +1538,7 @@
 	/* init tags */
 	seltags = emallocz(TAGSZ);
 	prevtags = emallocz(TAGSZ);
+    iucprevtags = emallocz(TAGSZ);
 	seltags[0] = prevtags[0] = True;
 
 	/* init layouts */
@@ -1883,6 +1889,32 @@
 	arrange();
 }
 
+void cycleurgent(const char *arg) {
+    Client *c;
+
+    if(!sel)
+        return;
+    if(!inucycle) {
+        initucycle = sel;
+        memcpy(iucprevtags, prevtags, TAGSZ);
+    }
+
+    for(c = clients; c && !c->isurgent; c = c->next);
+    if(c) {
+        memcpy(prevtags, seltags, TAGSZ);
+        memcpy(seltags, c->tags, TAGSZ);
+        focus(c);
+        arrange();
+        inucycle = True;
+        return;
+    }
+
+    memcpy(prevtags, iucprevtags, TAGSZ);
+    memcpy(seltags, initucycle->tags, TAGSZ);
+    focus(initucycle);
+    arrange();
+}
+
 /* There's no way to check accesses to destroyed windows, thus those cases are
  * ignored (especially on UnmapNotify's).  Other types of errors call Xlibs
  * default error handler, which may call exit.  */