This is an extremely hard question....you know him only sejak his Filem and interviews. anda don't really know him...He's rich enough to buy basically anything. I'm living overseas in Asia so I think I would bring him something from there. Something that he can't really buy in the US
I'd gift him a serigala, wolf for his birthday. They're loyal, fearsome, magnificent, and mystic creatures. Personally, I cannot resist them - I hope Johnny likes them! If he doesn't (many people are scared of them), then it would be a pity. I'd take back the present, saying I'll give him something better for his seterusnya birthday.
The real soalan is: What do anda get someone, who anda admire, who could get anything he wanted himself at anytime. I tried to look this soalan up. No Luck. All I can think of since I am one of his many peminat-peminat of his tv/movie career, etc., is something that I treasure most in my life. A kegemaran picture nicely framed, atau a kegemaran recipe that you've made thousands of times and it's been woven into your mind, heart, & soul.