ramona- I know that Fairy Godmother Tycoon is very popular, and I'm a fan of it as well. That Megaplex Madness was also fun.
There's a game on RA evaluation called County Fair that's a strategy/tycoon game. I don't when it's coming out, but I found it fun. Maybe because I like Rollercoaster Tycoon a lot, and it reminds me of that.