AVSForum HTPC group is the place to ask (Score 2, Informative)

Here is a recent summary of keyboard-and-mouse-in-one units for HTPCs. I can summarize it for you in a few sentences, though: None of the Bluetooth keyboards are suitable for home theater use (too big or no integrated trackball). The few otherwise usable HTPC keyboards use either IR or a proprietary RF scheme, both of which have either range or line-of-sight limitations