How much leftovers do you think are in some of the demos released?

Maybe this topic could be changed into 'How much leftovers..... games' there's a lot of stuff in the full releases as well. (Golden eye, Sonic 2 etc)

Some things Ive found..

*Saturn power disc #1 or Core disc. (same disc different cd art)
On the disc is a cd track of Thunderhawk 2: Firestorm. However, there's
no Thunderhawk 2 demo on this disc. Maybe it was planned.

*Most of the Tomb raider demos (on the Core disc, Sega flash etc) have the intro movies
on the disc. But they aren't played when playing the demo.

*Saturn power #2 or Gremlin disc 2 (same disc, different cd artwork again)
The Actua golf front end is on the disc and can be viewed by changing a .bin file to .bit.
The Actua golf demo was removed because a huge bug was in it.