I really hope that wasn't just a spoiler then that I should get if I think about it... T.T
The concrete girl is an episode with a creature that absorbed humans and when it did, their faces appeared on it and they were crying in pain. One couple had this really lovely romance happening and by the time they FINALLY hooked up, the creature absorbed the girl. The Doctor faught the creature, and it died, turning into a pile of goo, absorbing into the earth. The Doctor and his universal Deus ex MAchina sonic screwdriver soniced the ground, and forced up the 'last absorbed person' into the concrete. They proceeded to cut out the area of concrete, and the guy proudly displayed his girlfriend- the slab of concrete. Everyone lived happily ever after.
The end.
Oh- except with the parting comment of how the girl and guy have a love life still. Her being a slab of concrete with a morpheus face and him being flesh, and you the viewer having mental images of a man and a slab of concrete....
D:
It is REALLY bad. It stopped me from watching any more of Tennant actually. I'll watch the rest some day eventually, but for now, I'm still recoving from the trauma.
The awesome episodes of Tennants run were written by the guy that does the current Doctor's stuff- the Angels, the children of the Dammed, and I believe the girl in the fire was too. All excellent episodes

My friend didn't show me much of Tennant's run though. She doesn't like him much :/ IF there's any episodes I should consider, I'll watch them, but I'm not watching that one again. Love and Monsters almost made that Doctor a deal breaker after watching alot of REALLY good episodes of him
