i vs. p on LCD displays
one thing of importance i feel the need to mention is that all LCD displays used by apple are digital, which means that there is no such thing as refresh rate, or interlaced vs. progressive, at least when dealing with imagry such as a open GL game. in all apple LCDs, including those on Ti and iBooks, a DVI interface is used, and thus each pixel is updated as soon as the GPU calculates if it needs to change, with respect to the latency of the pixels in the screen, which is in milliseconds. Apple LCD screens tend to be more latent in pixel updates than some other screens made by 3rd party companies such as formac. and THEN you get into 9 megapixel LCD screens which also use DVI, and do work with macs. just FYI, a 9 megapixel 22-inch viewable 4:3 LCD screen rivals a cheap printer in resolution.
I will also note that the p on DTV resolutions like 720p stands for progressive, meaning each line is refreshed in direct succession, instead of every other line in 1080i, resulting in a true picture every refresh cycle, instead of every two. also, there is a 1080p resolution, and some projectors made by companies such as Runco, support it. however, the amount of data pushing through transmission pipes for 1080p is quite large for steady 30 fps. it is possible with a DVI interface, but I'm doubtful present component video interfaces could maintian signal integrity, even at a bandwidth of 54-55 MHz. hope this helps.
One last tidbit of interest, I have a friend who works for the NSA, and one of the goodies he has seen is a three by five inch LCD screen with 2000 by 3000 resolution, and said that even with a high power magnifying glass, the pixels could not be made out.-Dibbs
[edited for cursed typos!]