Joanne Pearce

The story begins when three aliens get a bit hacked off at their 'friend' Bernard, who keeps making a prat of himself playing space ball. It is while he is playing space ball that the others start playing around with the space ship controls. They accidentally disconnect his part of the ship, leaving him stranded while they crash into a large blue planet close by... (imdb)

Two couples who go on a boating holiday together, and run into some strange people and events. (imdb)