I read one, but it was preslashy, not actual slash. However, there is some good Gibbs/DiNozzo fic. Hoyden's springs to mind, but I've read one I quite liked by rageprufrock as well: try http://delicious.com/cimness/gibbs%2Fdinozzo and try the sidebar tags +!, +rec, and +♥ for the more outstanding ones (in one way or another). Jane Davitt's written some snappy dialogue (without substantial plottiness or romantic development that I recall), twoweevils has written far too few stories which are generally too short but some of my favourites (esp "Dating George Clooney" and "On It, Boss"), and cupidsbow has written, I think, two pieces that were both outstanding (esp "Say When").