Today's deals at DealNN include external hard drives, GPS units, HDTVs and more. ZipZoomFly.com is offering a $10 mail in rebate on the Cavalry CAUM series 1TB external hard drive that drops the price to $89.99. The refurbished, 5th gen. 60GB iPod video is available at eCost.com for $148.99. Amazon.com is offering the Navigon 2000S GPS navigator for $106.94. For today only SecondAct.com has the Philips 47-inch LCD HDTV priced at $999.99 with free shipping. Newegg.com has reduced the price on the Kingston 4GB SDHC memory card from $8.99 to $5.99 for today only.