Need 3 terabytes of storage? Sure, why not? The HDCA-UT30K from IODATA is one of the first commercial 3TB drives available and it can act as a DVR for Toshiba Regza TVs and, presumably, hold thousands and thousands of LOLCat photos.
It runs on USB 3.0 but works with 2.0 device and will cost about $300 when it hits the US.