On the example before I've setted the animation to a "vertical-slider", with an interval of 4.5 sec. and a speed of 1.8sec.
As you can see it bounce on animation stop. To do this I've used the jquery.easing 1.3 library, thet defines a really usefull set of animation functions.

I have also set the image link on titles, instead of images, and the autohide on both navigator and titlebar.

$("#showcase1").showcase({
    css: { width: "979px", height: "375px" },
	animation: { type: "vertical-slider", interval: 4500, stopOnHover: false, easefunction: "easeOutElastic", speed: 1800 },
    linksOn: "titles",
	images: [
    { url:"images/panorama1.jpg", 
	  description: "panorama - another great imageset provided by Riccardo Vandoni", 
	  link:"http://www.riccardovandoni.com", target: "_blank" }, 
    { url:"images/panorama2.jpg", 
	  description: "...the second panorama photo...", 
	  link:"http://www.riccardovandoni.com", target: "_blank" }, 
    { url:"images/panorama3.jpg", 
	  description: "...and the last", 
      link:"http://www.riccardovandoni.com", target: "_blank" }],
	navigator: { position: "top-right", orientation: "vertical", autoHide: true,
                 css: { padding:"6px", margin: "4px 0px 0px 0px" },
                 item: { 
                     css: { height:"8px", width:"8px", "-moz-border-radius": "8px", "-webkit-border-radius": "8px", 
                            backgroundColor: "Transparent", borderColor:"#878787" },
                     cssHover: { backgroundColor: "#ababab" },
                     cssSelected: { backgroundColor: "#dadada", borderColor: "#dadada" }
                 }
    },
    titleBar: { css: { backgroundColor: "#2c546f", color: "Black", fontSize: "1.4em", opacity: "0.86" } }
});

You can also use css classes to setup parts of the showcase. Using this stylesheet:

.titleBar { 
    padding: 4px;
    font-style: italic; 
    font-weight: bold;
    background-color: #2c546f;
    font-size: 1.4em; }
.titleBar a { color: #000000; }
.navigationItem { height:8px; width:8px; line-height: 8px;
                  -moz-border-radius: 8px; 
                  -webkit-border-radius: 8px; 
                  background-color: Transparent; 
                  border: solid 1px #878787;
                  margin: 0px 3px 3px 0px; }
.navigationItemHover { background-color: #ababab; }
.navigationItemSelected { background-color: #dadada; border-color: #dadada; }

Your options can be like:

...
	navigator: { position: "top-right", orientation: "vertical", autoHide: true,
                 css: { padding:"6px", margin: "4px 0px 0px 0px" },
                 item: { 
                     cssClass: "navigationItem",
                     cssClassHover: "navigationItemHover",
                     cssClassSelected: "navigationItemSelected" 
                 }
    },
    titleBar: { cssClass: "titleBar", css: { opacity: "0.86" } }
...