In my head, you are now Jack Black.
Yeah, the resemblance just isn't there in my mind. The dude's heavier than me by a lot. (I weigh about 165 pounds and stand 5 foot 7 inches tall.) His cheeks are a lot chubbier, he's got no glasses, but more hair on his head, different hair style, no facial hair to speak of. As far as actual facial features, I just don't see the resemblance at all.
Without facial hair, personally I think I look more like Neil Grayston (Fargo from Eureka) than Jack Black.