My Wii remote lags my HD TV and not on my standard old TV. Someone please help me i cant figure it out! and before anyone says "make sure you have component cables, 480p resolution, sensor bar sensitivity, 16.9 widescreen, game mode on TV", i did all this! and i CAN NOT go back to my old TV. experts, anyone, please?? ):

It's called your TV has a crappy plug-in. Looks like you just got ripped-off. What TV? The Brand? Year? Model? Any unique circumstances?

define "lags". also have you tried the composite cables on your new tv?

Bad frame rates. Like slow-mo. Like a flipnote and a movie going at the same speed. My arm moving so slow that you can see how far it moves per second or a video, and both start and end at the same time. The cables & Wii worked fine on old TV. New one's a bad egg. Perhaps the TV settings were tinkered w/, see how cable looks. Do all devices in that plug-in work just as bad? If so, it's the TV. If so, poor you.

I know what lag means, I wanted to know the specific item that's lagging.

Then you have done all you can. Welcome to the digital world. All things digital has this kind of latency, just more or less noticable. Yours are unfortunatly, very noticable. Maybe, just maybe, your new TV is better/quicker in handling digital signal through hdmi. Too bad Wii don´t have that. All you can do now is get a new better TV with less noticable latency. Unfortunatly you can´t check latency figures in the specs as that latency is a measure on (to put it simple) how quick the pixels can change. Better value here makes movement in picture less blurry and shadowing. What you would need is the total throughput latency from input to visibility. Havn´t seen that in any specs, you need to try it out yourself. I find it very noticable just wagglin the wiimote on the Wii menu. On an old TV it´s just like pointing with a "laser pointer" on the TV, not so on a "modern" TV when the pointer accuracy feels delayed and slow.
I personally have a LCD and a plasma, both very cheap models. The LCD is totally unplayable, the plasma is very close to perfect. I measured the latency of my LCD to around 140ms. At 60fps that is a delay of about 8-9 frames.

I have a Samsung. I have no problems. Is it your sensor bar?

It can't be the sensor bar if it works fine on the other TV.

Perhaps your Wiis settings need to be changed in the system menu? Try putting it to 60hz if it's PAL, or 480p instead of 480i. You've probably done this but I didn't see it mentioned. I always have to change my Wii console settings when swapping from my 4:3 CRT to 16:9 LCD.

LCDs can have latency issues but it shouldn't be this bad. A setting somewhere isn't matching up.