I like writing longer stuff, so far I've one 7k, one 12k and my bigbang (21k) done. But it's all a matter of what you're going for and what the bunnies and muse will allow. I'm sure I'll eventually write one just for NCIS (or as a NCIS/TW crossover)

I like when NCIS is randomly on because I can just have it on in the background and absorb it through osmosis. It's S2- Missing through SWAK I think. (And those 2 are my favorites of that year)

Gibbs!angst? really?