I'm getting both because of the sheer greatness of the 2nd generation.
I'm pre-ordering the English versions.
So that would make them the 2nd and 3rd games I ever pre-ordered after Pokemon Emerald.
And I got a crapload of cool stuff with it too, so I'll be looking forward to that almost as much as the games itself. (I dunno why. Better game experience?)
But yeah, I originally got Gold for GBC, but I want both because they both just seem great.
Unless the English name sucks for one of them.
That would change my mind about getting both pretty darn quick.