[quote name='confoosious']Hate to be 'that guy' but still cheaper to get hdmi + optical cable from monoprice.
edit: Wait, why do you need an optical cable if you have HDMI?[/QUOTE]
Home theater system with non-HDMI receiver, for one. (Though if you have a component a/v cable already, you can pry off part of the plastic and use that with your HDMI cable, instead of needing to buy a separate audio dongle.)
Decent price for the bundle.