Awesome! I was having a tiny bit of trouble finding the addresses myself. Thank you! Anyway, I made the following lua script, but I was a bit disappointed when I found out that lua text can't be drawn on the SGB border, where it would fit pleasantly and be out of the way. Regardless, it's a good concept for both people watching the movie using the ROM and potentially for unofficial encodes.
http://pastebin.com/cSXuVkSr
It is a simple display of how many Pokemon are currently captured. Of course, placement of this number can easily be changed to suit the viewer.
Personally, watching the current WIP with this running made it more enjoyable. I know that the official encodes must be lua free, but for WIPs and such, perhaps this idea can be used? =)
Disclaimer about the scripting: I tried using a for loop but it didn't work so I just did it the long way. It works, so I'm happy.