Adesso has just unveiled the WKB-3100 compact wireless keyboard. It has an integrated optical trackball and a range of up to 30 feet. The size is nice at less than 12 inches wide.
Do you use a wireless keyboard? I don’t see a need to use one with my desktop since I don’t move the keyboard around enough to justify one. But, I can see the need for using one with a HTPC setup. The integrated trackball makes this one look especially attractive to me.