If you don’t want to have a huge and ugly tower casing sitting in the middle of your living room as a HTPC, then this HDMI SATA Hard Drive HDD Media Player ought to do the trick. It comes with a 3.5″ HDD enclosure, capable of holding a hard drive up to 500GB in size. Supported file formats include MPEG1, MPEG2, MPEG4, DivX3.X/5.X, AVI, ASF, VOB, DAT, MP4, MPG, MP3, WAV, AAC and JPEG, BMP, GIF. Check out the other specifications right below.
You gotta get your own hard drive with this though.