Convert your old Xbox 360 to HDMI, sorta…

For about $90 you can convert your old  Xbox 360 to HDMI with a converter from Mad Catz. It will not be true HDMI, however it will eliminate the bulk of component cables and output to an HDMI connector. The unit supports HDMI 1.3, 1080p, Dolby Digital, and DTS. {Source}