Shorty and Goober
Aaron has lots of the typical endeaments for me, Sweetheart, Sweetie, Love, Pet, Dear etc etc and my usual mickname with most people, Shei, but he also likes to call me Shorty when hes feeling like being a butt (Im 5' he's 6'4")
I really usualy just stick to Aaron or dear but he has quite a few derogotory endeaments (if I may use that oxymoron) like Goober, Brat, Butt, and the ever popular Aaron David... (what comes of growing up together, Ive heard his mother use he middle name many times ;) )
There are also the old nicknames from hichschool band, sily flute player and noisy brass player.
Of course being the rather geeky people that we are - especialy when concerning Tolkienesque things, we have our share of Tolkien names, elvish terms like Melamin (my love) or Mellonnin (my friend); we also call each other Aragorn and Arwen (and several of their ensuing names, Strider, Estel, Undomiel, Half-elven etc.) Like I said we're geeks.