Compact, vertical, infinite ticker/scroller. Pauses on "mouseenter" event.

ticker.js

(function ($) {
	$.fn.ticker = function (options) {
		var defaults = {
			speed: 1000,
			pause: 3000,
			p: false
		};

		options = $.extend(defaults, options);

		scroller = function (obj2, height, options) {
			if (options.p) return;
			var obj = obj2.children('ul');
			var clone = obj.children('li:first').clone(true);
			obj.animate({ top: '-=' + height + 'px' }, options.speed, function () {
				$(this).children('li:first').remove();
				$(this).css('top', '0px');
			});
			obj.children('li:first').fadeOut(options.speed);
			clone.appendTo(obj);
		};

		return this.each(function () {
			var obj = $(this);
			var totalHeight = 0;
			obj.css({ overflow: 'hidden', position: 'relative' }).children('ul').css({ position: 'absolute' });
			obj.children('ul').children('li').each(function () {
				totalHeight += $(this).outerHeight();
			});
			obj.height(totalHeight);
			var interval = setInterval(function () {
				scroller(obj, obj.children('ul').children('li:first').outerHeight(), options);
			}, options.pause);
			obj.bind('mouseenter', function () {
				options.p = true;
			}).bind('mouseleave', function () {
				options.p = false;
			});
		});
	};
})(jQuery);

Demo: http://darkblue.sdf.org/lab/ticker/ticker.php