It's a classic, but I love Evil Genius. It's still very playable if you've never tried it. You're taking the role of a James Bond villain and developing your evil spy operation.
Rollercoaster Tycoon; Well, it's a builder, but you build theme parks!
Any of the Roller Coaster Tycoon games are awesome. RCT 2 is a lot of people's favorite and it's only 4 dollars. Or you can get all 3 for around $11.
Thanks. I'll check out Evil Genius.
I've played so much of RC Tycoon 2 and Sim City when I was a kid, grown bored of the two. Kinda hoping to see games similar to Hospital Tycoon and The Movies.