I guess Werner forgot that he already made his acting debut (as himself) in "Incident at Loch Ness". Makes sense, since he also forgot the name of the movie he was appearing in with Tom Cruise.
I was just listening to the latest Pod F Tompkast last night wherein Paul mused on creating a series where Garry Marshall and Werner Herzog travel around looking for crytozoological creatures- he should check out "Incidet at Loch Ness" for a partial preview of what that might look like.