Cheddar, Brie, Austrian Smoked, and I must admit to being a fan of the old Dairylea...
I would branch out a bit more, but a lot of cheeses have blue or green bits in them and I just can't bring myself to eat something that's mouldy, even if it is by design.
(With the exception of the baguette place near where I work which does a very nice Stilton and Chicken Mayo baguette...)