Andraste

I loved it, too. Donna was all colors of awesome, and I think it'll do the Doctor so much good to have her aboard. As for the Martha mentions, I'm of two minds about them. On one hand, it's good for the Doctor to miss her and to realize she's brilliant and regret that things went wrong. On the other hand, it wasn't all his fault. Martha's a big girl; she made her own decisions, and while falling for someone whose heart isn't available is a bitch, it doesn't ruin your life unless you let it. Furthermore, Martha's life was hardly destroyed, even halfway, and she'd kick him in the shins if she knew how he was moping. She had an equal part in things going wrong--hell, he was giving almost visible "I'm not available" vibes--and on the whole, I think she'd say her time on the TARDIS was worth it.

I mentioned to selenak that VotD confirmed for me that Martha did indeed do the Doctor some good. In S&J, he was into his "I'm best alone" BS, and it took five episodes for him to shake out of it and invite Martha to come on full-time. In VotD, though, he's obviously hungering for company and invites Astrid along, and it's only her death that sends him back into his morose determination to be alone. Fortunately, Donna's an irresistable force. I'm so looking forward to seeing them shake up space and time together!