Yeah, Caesar3 was awesome, great game!
As for Sierra adventure games... let's say I could appreciate just some of them! Lots of them were clones, and I remember I was scared by others when I was a little kid
The Colonel's Bequest frightened me a lot, it wasn't fun to die every minute in millions of cruel ways, like crushed by the chandelier or ate by crocodiles, or smashed in the face by a horse.
And there were puzzles made just to make you die, like oiling the old statue just to cut you off in pieces.
That's the reason why I've always thought LucasArts is totally better than Sierra.