1. Always check and remove sand before replacing lens cap on lens.
2. Never let wife view your pics on camera unless you've deleted all the chix in bikinis first.
Not sure which camera you have, but I can hide pictures from playback on my D200. It's a pretty sneaky feature if you ask me
Hmm..
1. Pan with moving subjects - always, no matter what shutter speed.
2. Avoid shooting wide open, this is one I see a lot - at least if max sharpness is your goal. Every lens has a sweet spot.
3. Don't use continuous shooting mode as an excuse for poor timing - for sports my first shot is always treated as if I'm in single shot mode.
4. Be careful panning with VR/IS lenses, while they SHOULD "detect" it, if you have the shutter half-pressed when they are coming at you, and keep it pressed when they start to go across your plane, the lenses don't always disable horizontal VR (in general they don't do this 100% of the time.) This causes the lens to treat your panning as vibration, and it will attempt to stop the motion and ADD blur to the image. If there's enough light, don't use it.
I'm not in a shooting mood right now so I can't think of too many, when you're out on a shoot you always have these things running through your head automatically.
Oh, actually.
5. Use the histogram, or better yet.. RGB histogram (and highlights / RGB highlights) to determine exposure, it's nearly impossible to tell exactly what's going on by eyeballing the LCD.