For a Whiskey, I would take a Bushmill, But for a Whisky, then it has to be a Lagavullin, it'll put a fire in your belly and fog your vision in no time, But the best bit is that it can be used as a general anesthetic at the end of the day when the body is aching from hours of toil, it works from the feet up.
It does tend to cause you to get your wucking mords fuddled up when the anesthetic hits the head!