I like any hair that falls in a lady's eyes. Best case scenario is if it falls in her eyes and she also constantly trips over it. But that's a bit rare.
For ladies who would like to turn me on but have short hair, I suggest growing long bangs. It takes months rather than years, and I do find it sexy.
For a lady with long hair but no bangs, I do not suggest bangs as an improvement. However, I can get into faux side bangs, created with a bobby pin. I especially like that when the bobby pin slides by degrees and the hair slowly creeps down into and then over the eyes.