Had a turkey/habanero jack sammich about an hour ago. This stuff is pretty good. I really like Trader Joe's pepper jack cheese. This habanero jack tasted a bit hotter, and I'm still feeling a little warmth in my stomach even an hour later. Not a "painful morning in the bathroom" warmth, just a nice bit of left over heat from the habanero cheese.
BTW, if you go to Vons, then look for this cheese in the regular refrigerated cheese section. It may also just be available in blocks, but mine also had it on sale. 2 for $6 or something like that.
I bought a block of Land 'o Lakes from Vons for $3 or so. It was on sale. I had some last night and hit was quite a bit spicier than your normal pepper jack. Good stuff!