Nivo Slide é um slide muito lindo e seu exemplo pode ser visto aqui. Além disso, você pode colocar setinhas nele, para que o visitante do blog vá passando as imagens.
1. Cole isso depois da tag <head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<script type="text/javascript" src="http://sugar-dance.org/nivo.js"></script>
<script type="text/javascript">
var $nv4wp = jQuery.noConflict();
$nv4wp(window).load(function() {
$nv4wp('#slider').nivoSlider({
effect:'random',
slices:15, // For slice animations
boxCols: 4, // For box animations
boxRows: 2, // For box animations
animSpeed: 500, // Slide transition speed
pauseTime: 3000, // How long each slide will show
startSlide:0, // Set starting Slide (0 index)
directionNav:true, //Next & Prev
directionNavHide:true, //Only show on hover
controlNav:true, // 1,2,3... navigation
controlNavThumbs:false, // Use thumbnails for Control Nav
controlNavThumbsFromRel:false, // Use image rel for thumbs
controlNavThumbsSearch: '.jpg', // Replace this with...
controlNavThumbsReplace: '_thumb.jpg', // ...this in thumb Image src
keyboardNav:true, //Use left & right arrows
pauseOnHover:true, //Stop animation while hovering
manualAdvance:false, //Force manual transitions
captionOpacity:0.8, //Universal caption opacity
prevText: 'Prev', // Prev directionNav text
nextText: 'Next', // Next directionNav text
beforeChange: function(){}, // Triggers before a slide transition
afterChange: function(){}, // Triggers after a slide transition
slideshowEnd: function(){}, // Triggers after all slides have been shown
lastSlide: function(){}, // Triggers when last slide is shown
afterLoad: function(){} // Triggers when slider has loaded
});
});
</script>
2. Cole isso no seu CSS:
#slider {position:relative;}
#slider img {position:absolute; top:0px; left:0px; display:none;}
#slider a {border:0; display:block;}
.nivoSlider {position:relative; width: 356px;}
.nivoSlider img {position:absolute; top:0px; left:0px;}
/* If an image is wrapped in a link */
.nivoSlider a.nivo-imageLink {position:absolute; top:0px; left:0px; width:100%; height:100%; border:0;
padding:0;margin:0; z-index:6; display:none;}
/* The slices and boxes in the Slider */
.nivo-slice {display:block;position:absolute;z-index:5;height:100%;}
.nivo-box {display:block;position:absolute;z-index:5;}
/* Caption styles */
.nivo-caption {position:absolute;left:0px; bottom:0px; background:#000; color:#fff; text-transform: uppercase; width: 100%;
z-index:50; border-right: 5px solid #;padding: 5px 0;}
.nivo-caption p {padding:0 20px;margin:0;font-size:14px;}
.nivo-caption a {display:inline !important;}
.nivo-html-caption {display:none;}
/* Direction nav styles (e.g. Next & Prev) */
.nivo-directionNav a {position:absolute;top:45%;z-index:99;cursor:pointer;}
.nivo-prevNav {left:0px;}
.nivo-nextNav {right:0px;}
.slider {width:100%;}
.slider img {position:absolute;top:0px;left:0px;display:none;}
.slider a {border:0;display:block;}
.nivo-controlNav {display:none;}
.nivo-directionNav a {display:block;width:31px;height:34px;background:url(http://media.tumblr.com/tumblr_m5sfxp36Ay1r5ehrc.png) no-repeat;text-indent:-9999px;border:0;
}
a.nivo-nextNav {background-position:-30px 0;right:15px;}
a.nivo-prevNav { left:15px;}
.nivo-caption {font-family:"Trebuchet MS", Arial, Helvetica, sans-serif;}
.nivo-caption a {color:#efe9d1; text-decoration:underline;}
3. E para finalizar, cole isso onde quer que apareça o slide:
<div id="slide"><div id="slider"> <a href="http://link" target="_blank"><img src="http://imagem.com" width="763" height="277" /></a> <a href="http://link" target="_blank"><img src="http://imagem.com" width="763" height="277" /></a> <a href="http://link" target="_blank"><img src="http://imagem.com" width="763" height="277" /></a> </div></div>
♥ Se você quiser colocar uma descrição no slide, é só colocar title=”texto” no HTML final, como mostra abaixo:
<a href="http://link" target="_blank"><img src="http://imagem.com" width="763" height="277" title="texto"></a>
♥ Se sua imagem for 400×200, é só alterar o tamanho como mostra abaixo:
<a href="http://link" target="_blank"><img src="http://imagem.com" width="400" height="200" title="texto"></a>
Pronto? Espero que tenham gostado! Dúvidas no ask-me, por favor 
