For those familiar with Only Connect, you will know that you have to place the 16 things in the grid below into four groups of four based on some connection between them. To be completely correct you have to find the four correct groups (and there are some red herrings in there) and the connection for each of the four groups.
Saturn, Thor, Moon and Sun - Give Name to Days of the Week
Venus, Tennessee, Chester and Frank - Williams
Mercury, Jupiter, Mars and Neptune - Planets
Earth, Viler, Bairn and Satchmo - Anagrams of Organs (Heart, Liver, Brain and Stomach)