With version 1.2.0 we have two new shortcodes. To show a couple of random images use the shortcode: [ random max=2 ] For the most recent images, use the shortcode : [ recent max=4 ]
NextGEN Gallery is a WordPress gallery plugin that offers sophisticated gallery management and displays. It's one of the most popular plugins ever produced for WordPress, currently downloaded around 30,000 times per week. You can download it for free from the NextGEN page at WordPress.org.