The Impossible Girl, the best temp in Chiswick, and the Bad Wolf. Honorable Mention: I'm River Song. Check your records again. In my honest opinion though, River doesn't count as companion. One psychopath per TARDIS. :)
Doctor Who Challenge Day Favorite Season- Season As much as I love Nine and Donna and the Ponds, I think Rose and Ten had the most fun roaming all of space and time together and made 2 my favorite season.