Mozzarella (AKA the cheese that no one can spell without looking it up on dictionary.com). I don't always go out to eat, but when I do I usually order mozzarella sticks for an appetizer, sometimes as the main course. Although apparently cheesecake qualifies as cheese. If that's the case, cheesecake is my favorite.
Parmesan. It's the only kind of cheese I can bear to bring anywhere near my mouth. I thoroughly detest every other form of cheese. However, I am okay with Parmesan. That said, I will only eat it in the shredded version meant to be a topping for pastas. As far as I'm concerned, that is the only suitable use for cheese.
My favorite is Colby Jack as well! I love most types of cheese, but I haven't tried a lot of the more popular "weird" ones yet. I enjoy gruyere and feta in recipes they are called for, but not plain. Colby Jack, mozzarella and cheddar I love to eat in slices.
I love Colby Jack, partly because its the best on nachos, and partly because one time we were camping, on the beach, we heard someone yell out "Colby! Jack!" then something about leaving like she was calling their names. She probably said Cody and Jack, but it sounded like she said Colby Jack, it was hilarious.