I've been to the Discovery Center countless times, and I always have fun. They rotate some exhibits to keep it interesting, but keep others so you can come back and show your friends or whatnot. I really like the fact that they give simple explanations of everything, so you can understand the different things you're doing without needing a PHD. The Discovery Center is great for dates, and you can show off you're science side. And, it's right across the Boise river from the park, so you can prepare a picnic and make an afternoon of it. Hands down, best scientific fun I've ever had.