diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -7,7 +7,7 @@
  */
 return array(
   'names' => array(
-    'core.pkg.css' => 'a419cf4b',
+    'core.pkg.css' => 'ac9bbf2a',
     'core.pkg.js' => '400453e4',
     'darkconsole.pkg.js' => 'e7393ebb',
     'differential.pkg.css' => '2de124c9',
@@ -111,7 +111,7 @@
     'rsrc/css/font/font-aleo.css' => '8bdb2835',
     'rsrc/css/font/font-awesome.css' => 'c43323c5',
     'rsrc/css/font/font-lato.css' => 'c7ccd872',
-    'rsrc/css/font/phui-font-icon-base.css' => 'ecbbb4c2',
+    'rsrc/css/font/phui-font-icon-base.css' => 'c0fc32fa',
     'rsrc/css/layout/phabricator-filetree-view.css' => 'fccf9f82',
     'rsrc/css/layout/phabricator-hovercard-view.css' => '1239cd52',
     'rsrc/css/layout/phabricator-side-menu-view.css' => 'bec2458e',
@@ -509,6 +509,7 @@
     'rsrc/js/phuix/PHUIXDropdownMenu.js' => 'bd4c8dca',
     'rsrc/js/phuix/PHUIXFormControl.js' => '8fba1997',
     'rsrc/js/phuix/PHUIXIconView.js' => 'bff6884b',
+    'rsrc/js/special/behavior-trail.js' => '740fe844',
   ),
   'symbols' => array(
     'almanac-css' => 'dbb9b3af',
@@ -645,6 +646,7 @@
     'javelin-behavior-phabricator-search-typeahead' => '048330fa',
     'javelin-behavior-phabricator-show-older-transactions' => 'dbbf48b6',
     'javelin-behavior-phabricator-tooltips' => '3ee3408b',
+    'javelin-behavior-phabricator-trail' => '740fe844',
     'javelin-behavior-phabricator-transaction-comment-form' => 'b23b49e6',
     'javelin-behavior-phabricator-transaction-list' => '13c739ea',
     'javelin-behavior-phabricator-watch-anchor' => '9f36c42d',
@@ -804,7 +806,7 @@
     'phui-document-view-css' => 'a4a1c3b9',
     'phui-document-view-pro-css' => 'e0fad431',
     'phui-feed-story-css' => 'b7b26d23',
-    'phui-font-icon-base-css' => 'ecbbb4c2',
+    'phui-font-icon-base-css' => 'c0fc32fa',
     'phui-fontkit-css' => '9cda225e',
     'phui-form-css' => '0b98e572',
     'phui-form-view-css' => '4a1a0f5e',
@@ -1360,6 +1362,12 @@
       'javelin-vector',
       'javelin-dom',
     ),
+    '740fe844' => array(
+      'javelin-behavior',
+      'javelin-dom',
+      'javelin-stratcom',
+      'javelin-vector',
+    ),
     '76b9fc3e' => array(
       'javelin-behavior',
       'javelin-stratcom',
diff --git a/src/view/page/PhabricatorStandardPageView.php b/src/view/page/PhabricatorStandardPageView.php
--- a/src/view/page/PhabricatorStandardPageView.php
+++ b/src/view/page/PhabricatorStandardPageView.php
@@ -215,6 +215,7 @@
     require_celerity_resource('font-aleo');
 
     Javelin::initBehavior('workflow', array());
+    Javelin::initBehavior('phabricator-trail');
 
     $request = $this->getRequest();
     $user = null;
diff --git a/webroot/rsrc/css/font/phui-font-icon-base.css b/webroot/rsrc/css/font/phui-font-icon-base.css
--- a/webroot/rsrc/css/font/phui-font-icon-base.css
+++ b/webroot/rsrc/css/font/phui-font-icon-base.css
@@ -161,3 +161,21 @@
 .device-desktop a.phui-icon-view.bluegrey:hover {
   color: {$darkbluetext};
 }
+
+
+.ph-bounceout {
+  animation: bounceout 0.5s linear forwards;
+}
+
+@keyframes bounceout {
+  0% {
+    transform: scale(1.0) rotate(0deg);
+  }
+  10% {
+    transform: scale(2.0) rotate(0deg);
+  }
+  100% {
+    transform: scale(0) rotate(359deg);
+    opacity: 0;
+  }
+}
diff --git a/webroot/rsrc/js/special/behavior-trail.js b/webroot/rsrc/js/special/behavior-trail.js
new file mode 100644
--- /dev/null
+++ b/webroot/rsrc/js/special/behavior-trail.js
@@ -0,0 +1,81 @@
+/**
+ * @provides javelin-behavior-phabricator-trail
+ * @requires javelin-behavior
+ *           javelin-dom
+ *           javelin-stratcom
+ *           javelin-vector
+ * @javelin
+ */
+
+JX.behavior('phabricator-trail', function() {
+  var last = null;
+  var trail = [];
+
+  var n = 0;
+  JX.Stratcom.listen('mousemove', null, function(e) {
+    var v = JX.$V(e);
+
+    if (!last) {
+      last = v;
+      return;
+    }
+
+    var dx = v.x - last.x;
+    var dy = v.y - last.y;
+    var spacing = 24;
+
+    if ((dx * dx) + (dy * dy) < (spacing * spacing)) {
+      // Mouse hasn't moved far enough, just bail.
+      return;
+    }
+
+    var node;
+    // If the trail is too long, throw away the end.
+    while (trail.length > 8) {
+      node = trail[0];
+      JX.DOM.remove(node);
+      trail.splice(0, 1);
+    }
+
+    var color;
+    if (n % 2) {
+      color = '#c0392b';
+    } else {
+      color = '#139543';
+    }
+
+    n++;
+
+    var icon;
+    if (Math.random() > 0.5) {
+      icon = 'fa-star';
+    } else {
+      icon = 'fa-tree';
+    }
+
+    node = JX.$N(
+      'span',
+      {
+        className: 'phui-icon-view phui-font-fa ph-bounceout ' + icon,
+        style: {
+          position: 'absolute',
+          color: color,
+          zIndex: 20151225
+        }
+      },
+      null);
+
+    var size = JX.Vector.getDim(node);
+
+    last.x -= size.x / 2;
+    last.y -= size.y / 2;
+
+    last.setPos(node);
+
+    trail.push(node);
+    document.body.appendChild(node);
+
+    last = v;
+  });
+
+});