Top 10 Doctor Who Companions That Were Only in 1-2 Episodes

Come on Its Kylie minogue doing a one great shot stint as a companion And she did a fine job portraying such a tragic heroine whose death still felt boyh poignant & mythical I still hope that stardust gets collected together & from which they may clone a duplicate of

Have I seen that actor before?

Would have liked to have seen Sally as a companion.