Oh we are talking favorite companions, well mine will always be Sarah Jane I just adore her (and I also loved the Sarah Jane Adventures).
As for New Who I think my favorite companions were Donna & Rory (Rory counts right?)
Favorite episodes/story lines of Who are: City of Death & the Doctor's Wife (no coincidence they they both happen to be written by two of my favorite authors).
Favorite Doctor: I think it's a tie between 3, 4, and 11 (I can't choose...)
Okay I think that covers everything
