As ideas go, Inspiration! is a novel one, bringing the game within a game concept home with aplomb. As games go, Inspiration! is decidedly ok. The humor is in the silly and exuberant type vein (enjoyable in small doses, but your mileage may vary), and the room descriptions are minimal, but it's really the structure that annoyed me.
You are looking for inspiration to write your IF game, and so you set out to look for it around your house. I didn't mind the random actions you do to find inspiration; it's the fact that when you come back to the office to write your game, you write and the game ends -- boom. You'd better have a decent score before you get there, as you get one shot at it.
On the plus side, the game is fairly easy and there's no trash. It's also short, so you probably won't spend a lot of time trying to puzzle things out. I scored 25/40 on my first time through, and even that was a surprisingly positive ending.
On the negative side, Inspiration! is a story about finding inspiration, but itself does not inspire. It's basically a better-than-average "explore your own house" setup without any enduring themes.
If you're in the mood for something light-hearted and silly by turns, Inspiration! is just the thing.