Wow. I didn't realize the three main themes until I looked at everything listed. Thanks so much for compiling this list! The "dreams within dreams" might indicate that everything this season has been a hallucination (and it's certainly been a main theme throughout the episodes.) Have we seen House driving a motorcycle at all this season?

And I'm definitely starting to think Rachel might be involved somehow in the finale. Cuddy's mother is supposed to appear in the finale I think...perhaps she's comforting Cuddy following a car crash that leaves Rachel injured or dead? Or maybe Cuddy's mother was drunk and driving the car in the first place? I think Cuddy's sister is also in that episode. Is it possible that she could have been babysitting Rachel and ends up crashing the car, leaving Cuddy earning her mother's comfort, and Julia earning her mother's disapproval? Maybe Cuddy was driving the car and crashes it? Perhaps she was on her cellphone with House at the time and blames him for Rachel's death? And was it said that House's car or motorcycle was seen outside of Cuddy's house?

There really does seem to be an emphasis on secret parentage. Is it possible that Wilson realized that Cuddy was pregnant during her ultrasound while she was ill, but both agreed not to tell House? Is it possible that Wilson realized Cuddy was pregnant during her ultrasound but didn't tell her? (That seems less believable to me.) Maybe the reason Cuddy broke up with House in "Bombshells" wasn't merely because of the Vicodin use, but because she realized that she was pregnant and didn't want House around when she had the baby because of the relapse.

I'm not really sure what to think, but there are certainly a lot of possibilities.