In General DLP is better for movies and has a much better contrast ratio, meaning the brightness out put (ANSI Lumens) can be kept lower. LCD keeps much truer to origional colours so much better for business use - Photos, Maps, Diagrams ect..
I have just had a friend who bought an LCD projector with high brightnesss output - around 3000 ANSI Lumens thinking this would be great for use in day time conditions. but he was wrong!! For a projector to work for movies you really need a pitch balck room. Think that a projector screen is white, although projector do project black, you cannot make the white screen any darker by projecting light onto it! the brighter the projector the worse this will get. When all the lights are off this in respect makes the screen 'black' This is why all top end projectors are no more than 1700 ANSI lumens, and DLP to deal with the high contrast needed at such a low brightnes output.