I was afraid this would never happen again. Two very good episodes, too.

I just pray that we'll get to see a few more Troughton episodes. He's the doctor that set the standard that all future doctors followed, yet the least known because the moronic BBC wiped basically his entire run, and now we only have about half of it.

Tom Baker was "my Doctor" because he's the one who made me love the show when I was a kid, but Troughton (and Zoë and Jamie) are my favorite era.

edit: Zoë and Jamie are from way back when the companions were expected to be useful, before Sarah Jane. Zoë was better at math than the Doctor; imagine them doing anything like that now.

Companions are still useful, they just bring different skills to the Doctor (humanity?).

That era of companions was a response to the eras before then when companions were expected to just look pretty and scream on cue.