John Smith (he is the Doctor's alter ego on Earth -- see more here).
Apparently there is a John Smith brewery, who knew?
as for cocktails, J is for Jelly Baby Cocktail:
1 oz vodka
1 oz peach schnapps
1 oz grenadine syrup
1 oz Blue Curacao liqueur
1 oz white rum
6 oz pineapple juice
Recipe from here.
Jelly Babies were the fourth Doctor's favorite and he always seemed to have them to hand out -- they are similar to gummy bears (for those of us in the US).