Since SFE started carrying the BeagleBoard, a good addition to the line would be the [BeagleBuddy Zippy made by [TinCanTools. It has 10MBit Ethernet (ENC28J60), 2nd UART, 2nd SD/MMC slot, battery backed RTC, and a5V I2C header.
8-Dale](http://www.tincantools.com)](http://tincantools.com/product.php?productid=16147&cat=0&page=1&featured)