Forgive me for being such a novice with MAC, but they had a very large selection of cosmetics. The only one larger that I've seen is the one I went to in Ohio. In the back of the store, the MAC section took up the entire back wall.
For lips, they had about over 30 (total) different plushglass, lipglass. lustreglass. They had about 10-12 slimshines/mattine lipsticks; 20+ lipsticks, 3 tendertones (pink, peach, and green).
They had about 12 different pigments (many warms in the coppery and golden shades, and for the cools—aire de bleu (?), and mauvement), one of which was a glitter reflects red (?). They had about 6 or 7 fluidlines, about 7-8 paint pots, eyeshadow quads (a fafi, another from naughty nauticals (I think)), the 2007 holiday eyeshadow sets in smokey and cool (as well as the eyeliners), about 20 eyeshadows, shadesticks (no sharkskin (very sad about this)—although I did pick up a shadestick quad there for $20), tons of cases/makeup bags, many shades of foundations/powders/liquids.
At the least, I hope this gives you some idea of the large selection they have. Good luck!