Tom Ford is my go to cologne. Not the most unusual scent, but it's non-offensive in any situation (unlike Bijan). She's only smelled a handful so far, her favs at this point are Burberry Touch and John Varvatos.
You want something that smells different, try Gucci Pour Homme II. No matter how many times I smell it I just can't get enough, and at the same time I can't decide if I like the smell or not.