Dimensions in Time (with Introductions) 

Charity Special episode. In 3D, requires Pulfrich effect 3D glasses to see the 3D. Jon Pertwee, Tom Baker, Peter Davison, Colin Baker, Sylvester McCoy, Carole Ann Ford, Deborah Watling, Caroline John, Elisabeth Sladen, Louise Jameson, Lalla Ward, Sarah Sutton, Bonnie Langford, Sophie Aldred, Nicholas Courtney, Richard Franklin & Kate O'Mara