OK, the interactive spreadsheet I put together for computing calorie burn is located right here! The second data page is simply a static calorie burn log.
Feel free to DL and use it, it's in Excel Format.
All you have top do is enter total weight including your bike in the appropriate row for your speed and it will compute the caloric burn for you in Calories/hr. It's not perfect, doesn't account for slope or wind, but it's a decent average though....it's close enough for the purpose.
The archived PDF for Spinner Saturday 2006 is there as well!