Now what? Leaking fluid...

[BenM]

I've just about 100,000 miles since my transmission was rebuilt. I was backing up a steep incline to park at work yesterday morning and there was a thunk and a rattle. The rattle was there when I started to go home, and went away shortly after, but now the car feels like it's pushing against something and transmission fluid is dripping out of the bellhousing.   

It's been rain, snow, sleet, and high winds the last few days, so I didn't get a good look underneath last night.

[IowaEagle]

Torque converter input shaft may have cracked and has taken out the front seal.