If you happen to have a TiVo Series 3 or HD, you'll be getting some new features soon.
* Multi-Room Viewing - streaming recorded TV from one TiVo box to another in your home network.
* TiVoToGo - saving recorded TV to your PC.
* eSATA Support - support for External SATA hard-drives allowing for 500GB of extra storage.
* Progressive Downloads - start watching TiVoCast and Unbox content as they download.
Still, these boxes still cost around $600 and have a monthly fee. An HD DVR from your cable provider just has that monthly fee.
Sure, you won't own it, but you also don't have to drop $600. They are less featured, though.