Better Recent Posts Widget Pro provides a greatly enhanced recent posts widget. The default recent posts widget that comes with WordPress offers almost zero control over which posts are displayed, or how they are displayed. This widget fixes that.
Create Beautiful Sliders with Ease Sugar Slider makes it as easy as it could possibly be to create gorgeous sliders for your WordPress powered site. Forget nasty custom fields and image URLs. You can even forget about manually resizing every image before you upload it.