AS photoace said these will all work well with your camera. And the SB800 can also act as the commander if you get more flashes to use in the creative lighting system

All flashes are not compatible. If its a Nikon flash you need to make sure its new enough that the sync trigger voltage is low enough not to harm your camera. If it is a 3rd party flash the same holds true and it will need a nikon module to give you many of the TTL functions though it still may work manually. If your sync trigger voltage is too high it can damage your camera. Conventional wisdom is for DSLR to keep it below 6 volts

Nikon just introduced a module to use with older flashes to make them compatible with the creative lighting system Wien also makes a hot shoe to hot shoe safe sync slave that will work
The nikon module can be seen here

http://www.nikonusa.com/Find-Your-Nikon/Product/Flashes/3070/SU-4-Wireless-Remote-TTL-Flash-Controller.html

The wein is here

http://www.ritzcamera.com/product/532045812.htm

There is a chart on sync voltages here but I cannot vouch for the accuracy of it
the chart I looked at is here

http://www.botzilla.com/photo/strobeVolts.html