Ha, I was thinking of the same thing. Who knows, maybe he's built for this kind of thing. On that note : if he can get a good night's sleep after all that caffeine, then I envy this man's constitution, which can absorb so much caffeine and still not reel from it! Poor me has to strictly follow a no-caffeine after 6 p.m. rule if I have to get any sleep. Actually, come to think of it, the only time I can handle coffee gracefully is right after I wake up from sleep.
Can't put in words how much better I sleep after moving to decaffeinated coffee.
I do like a nice coffee but I'm content with instant[1] decaf (and even if I have 10 cups a day it's not more caffeine than the equivalent of a single cup of caffeinated coffee).
Not spending £3/$5 a day on coffee helps too. It means I'll pay my mortgage off 2 years early.