Rode it 7 times yesterday and going back right now...
How big- I would say about 10-15 feet, but you really cant tell because when you finally physically see it, it looks like its 40 feet above you and the track goes right up towards it in a rush
Smell- didn't smell a thing aside from the water and mist and the fear from the kid sitting in the car ahead of me
How Fast- See the "how big" up top, when you get right below him the ride peaks then drops and you plunge back into darkness. but I have a picture of it stretching / leaning off a ledge to grab you as he holds a twisted piece of railroad track in his left hand, and the wind blowing makes his hair wisp as his right arm and claw swing down as if he is grabbing you. Looks very scary / soooo cool when riding-

the picture I have of it makes him look a bit different- almost cute.... I ruined my own magic taking it-:brick:
Very cool- worth the wait (years) Haunted Mansion will always be my favorite ride, but I think that this ride has done a lot of damage and got right up there at number 2 on my fav's list.
To all involved- Amazing Job, a job well done... I'm on my way out the door now for ride day number 2...