[olegk]

Plasmas can produce 600fps.

Good LCDs can do 240fps. Many can do 120fps.

[kierank]

Only by repeating or interpolating input frames.

[sp332]

I'm not sure what you mean. The inputs (eg. HDMI) don't support the bandwidth necessary for 120 Hz, but if they did, the LCD could display them. Interpolating frames is similar to upscaling DVDs to an HDTV. You make a better picture out of the inputs available.

[kierank]

Since framerate choice is not usually a technical but an editorial decision in order to create a particular effect, then saying interpolated frames create a "better picture" is hugely debatable.

[olegk]

Not true. HDMI 1.4 has enough bandwidth to do 2048x1080 at 96fps (or 4096×2160 at 24fps).