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recently my temp needle has been jumping all the way to H then falls bak down right in the middle, wat could be the problem? and i'm at 20k right now, maybe i should do the 20k check from honda

 
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Does this happen all the time while you drive are just when you start the car up?

Could be a couple of things;

Defective gauge

Sticking thermostat

Fan intermitinly turning on and off

blockage in the cooling system

I'd take it in to a shop ASAP, you don't want to overheat the engine to many times.

 
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check fuse for your radiator fan

 
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Thats not a reason to go in for 20K... thats just a reason to go in and get that fixed under warranty. 20K checkup isn't going to address that problem.
Look down the back of the radiator and make sure there is coolant in the reservoir and its between the min and max lines. I had to add a little back in at about 16K.... its not burning it, it just happens. You may have run it a little low. But if its spiking like that, it's probably a bad thermostat. Same thing happened in my dad's car. Get it done under warranty.

 
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so best thing to do is take it to honda and have them fix it?

 
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my old ford ranger did that a lot .. it was the thermostat..