Not only do store-bought hummus brands usually have more fat than they need (I do add a bit of olive oil to my homemade hummus), but they usually substitute cheaper non-olive oil. A bit of olive oil will be in there, but way down on the list.
If you try it and it doesn't thrill you, just remember that you can definitely vary the proportions. You may prefer more or less tahini, garlic, lemon juice, etc.
Started 4/14/08 LINK TO PROGRESS PICS
"It is impossible to live pleasurably without living wisely, well, and justly, and it is impossible to live wisely, well, and justly without living pleasurably" Epicurus