How big a deal is the 120 hz feature on new TV's?

Very on LCD's. You need all the bandwidth you can get if you are going to match 24 frames. Look at the Sharp 64 series. They also have a gaming unit the g3u, not the g1u. The problem with LCD's is the viewing angle, limited compared with plasma. Remember some high end lcd computer monitors like the Gateway 30", don't have 120 but beat any LCD TV when it comes to gaming. You figure.

It's a big deal.

For me, someone who watches lots of movies, the greys, blacks and shadow detail aren't good enough yet - they're better on SOTA LCDs like Sony XBR and Sharp, but they're not quite good enough yet for me. Plasmas still beat LCDs hands down for shadow detail and deep blacks. My other hassle with LCDs is the viewing angles.

If you're not a movie watcher then you might be very happy with an LCD.

What LCD/size monitor do you guy's use for PC? Since Samsung's are dual purpose, they seem to be a good buy(especially the 32")...yummy.

I am curious about this too as I am currently shopping for a LCD.....

I think 120 Hz might pertain to other technologies as I saw it as a feature on a Samsung DLP.