Does the GOG version include the bonus CD content? Anyway, thx for bringing us this game!
The bonus disk includes the following:
* The bonus henchman, Colonel Blackheart
* The bonus item, the Lay-Z Minion Recliner Chair
* The bonus trap, the Nut Rupture Flashbang Launcher Palm Tree
* A bunch of more goodies!

It's free to download from several sites btw, GOG should really include this as bonus content:
http://www.fileplanet.com/dl.aspx?/strategyplanet/evilgenius/BonusCD.zip
http://dlh.net/cgi-bin/dlp.cgi?lang=&sys=pc&file=evilgenius_bonuscd.zip&ref=ps
http://www.gog.com/en/forum/evil_genius/bonus_content
Didn't see that topic, forgive me.