One of the best movies made under this genre is definitely "Kalyana Raman", which was made nearly 30 years ago, much before Patrick Swayze's "Ghost". The rib-tickling performance of Kamalahasan as the buck-toothed Kalyanam and his twin Raman was the precursor to many memorable roles he took on later in his career.
undoubtedly..THE WORST MOVIE OF THE DECADE!! A traumatic experience that completely left me clueless..!! don't get deceived by the posters..Its a slow- paced,jaded movie with no logic whatso ever! God knows what the director was trying to convey!