Yes there was a lot more. After they showed the Halo 2 segement, there was about ten or more minutes left of OW4 stuff that you missed if you left early. It showed some rough cut gameplay prototype that was running. Along with a couple really great CG sequences: The river scene with mudokon huts, and mudokons moving barrels, and fishing on the river bank. And steef rowing his boat by them. Also the much talked about army of sligs marching through the rain holding torches, and snoozers and industrial weapons visible. Along with a lot of concept art shown, and also some info about Steef and how he changes later in the game. I recomend asking for a copy of the tape. Or watching the show through this link
Copy of Discovery Channel program
Look for the news article on there that mentions Discovery Channel xbox program and click on kliek hier( yes the writing is written in another language). Thanks to Oddipus for posting this link in the other thread, I just dont think many people read his post and caught it as I did.
Make sure you have windows media player, the sreaming version is pretty good, but as stated not as good as the actual program that was on last night was. nevertheless it will give you people who missed it, a lot more information about what most people are talking about.