Aside from the Yankee game story that Mitch tell, another true story from Billy Crystal's life is the wake up call from his mother on his birthday. According to Billy in the DVD Commentary, in real life, his mother would call him on his birthday at around 5 o'clock in the morning (the time he was born) and verbally re-enact the event over the phone. The rendition in the film is word-for-word the true story of Billy Crystal's birth.
As Mitch walks up on Jeff and T.R. as they are harassing Bonnie, Jeff is standing with his right side to Mitch. When they switch cameras, Jeff has moved so his back it to Mitch.
What are the differences between the Theatrical Version and the DVD Version?
A
The DVD Version features an additional conversation between Mitch (Billy Crystal), Phil (Daniel Stern) and Ed (Bruno Kirby). Therefore the DVD runs approx. 4 minutes longer than the old Theatrical Version. A detailed comparison between both versions with pictures can be found here.