Delcom Engineering has pre-programmed Cypress chipsets allowing access to digital I/Os. And only $8.00! Complete with a Windows driver and sample C applications. [Indirectly via Slashdot: USB Menorah]
This has serious drool potential for an embedded developer. Imagine Makefiles that can reset the target before uploading the firmware, or unit tests on the target hardware with the PC in control of the DIOs.
Ok, if you're not an embedded developer the use of the term "serious drool potential" is probably frightening, so move along, nothing to see here.