I've got too much stuff to list, so I'll keep it brief.
D700 with a big Nikkor lens and telecoverter, - with the Manfrotto tripod (055XPROB / 808RC4). What a great idea the tripod is - don't have to hold the camera all the time. This is much more convenient that a monopod, provided there is adequate room for the tripod.
That's now my favourite combination, and what I'll normally bring. I get amazing results with this combination, and given I never used a tripod before, I find the tripod makes photography in low light almost too easy.
My old 300mm prime lens doesn't get much use anymore - the 200-400mm covers it well, and is more convenient, despite the size and weight. I normally won't take a second camera or other lenses. But if I do, it'll generally be a Nikon D80 and the 24-70mm F/2.8 Zoom-Nikkor, since that combination works very well.
+Tamrac Expedition 5 backpack (the 200-400 and camera just fit in it, separate of course)
+ Cleaning stuff (lens pens, cleaning cloths)
+ extra CF cards (never used since I don't blast away on the shutter button)
+ something to eat
+ Serengeti glasses
[Edited 2009-11-15 00:15:01 by cpd]