I like it. I once heard it in a really bad movie with
Julia Styles and
Freddie Prinze, Jr. I don't know what the movie was called, this was some years ago.
Imogen seems like an adult name, though. I find it hard to imagine anyone younger than 40 having it. Even though in the movie
Julia was a college student, I believe.
It reminds me of imagine and I really, really like that. I hate
Imogene though.