It looks like any LCD/LED tv with 120hz (and above) will automatically play bluray dvd at 24p as quoted below.
"24p true cinema is marketing jargon and just means that your TV can refresh at 24fps therefore displaying Blu-ray/HD-DVD natively (sometimes at multiples of 24 such as 48, 72, 120Htz). This is good as it reduces telecine judder, this is when a TV refreshing at 50/60Htz performs various forms of 'pulldown' to display an image with a refresh rate not native to the TV, this can cause judder especially with fast moving scenes."
"You shouldn't have to activate this feature on your TV as it should detect a 24fps signal. You may need to activate it from your Blu-Ray/HD-DVD player or PC but this will depend on the player."