I think Gail is a wonderful name. I think it can be used as a boy's name too, as a variant of Gail. There's a character in the first game of the series Dino Crisis called Gail, and he's a manly, rough person.
Gail Macaulay, played by Ann Blyth, is the main character of the touching 1950 movie Our Very Own. Gail is the oldest daughter of a typical American family who finds out when she turns 18 that she was adopted, and the movie follows her as she moved from anger and hurt to acceptance. I never really thought about this name much before seeing this movie, but though it isn't my favorite it has a nice sound and a pleasant connotation.