I don't care if it is doctoring up a box, can't seem to find one I like
For a doctored box cake recipe try the brides cake in the Cake Mix Doctor.
1 box white cake mix
1 stick butter melted
1 box pudding
1 cup of milk
(this is just off the top of my head, I hope this is right. Please someone correct me if I'm wrong)
For a scratch recipe look at this thread. They did taste test on a bunch of different recipes.