PAVILION, SELSEY. Most motion pictures appeal to the public because of their excitement, suspense or their eye appeal. "TOMORROW IS FOREVER", which opens at the Pavilion on Monday, has all the elements of fine entertainment plus that magnetic and satisfying quality, heart appeal. Once or twice each year comes a picture deep in human emotions and human consideration. This International picture starring Claudette Colbert, Orson Welles and George Brent is in that class. Dana Andrew and Brian Donlevy can be seen on Thursday in "CANYON PASSAGE".