usually worth going to. they have boatloads of films, some good, some bad, but you can go to all of them (some 60 or so) on a delegate's pass of rs. 300. what a deal! this is probably the best intl film festival in india, usually much better than the iffi in goa. worth heading out to trivandrum for a week.
i went to this last year, and thought it was great stuff. i saw at least one outstanding film (the old "memories of underdevelopment", cuba, 1969) and several others which were quite good. i also saw one or two that were awful.
you can register ahead of time (in fact you must, hard to get onsite registration) at the following website.
other sites with info: