Matt Dallas

The program was "Kyle XY" (ABC Family, 2006- ), an intriguing science fiction drama about a boy with no memory or history that has caught on with audiences, thanks in no small part to Dallas' striking features. The show was a big career boost for the Phoenix, AZ native, who had only logged a handful of television roles prior to this star-making turn.

The oldest of four siblings, Dallas was born Oct. 12, 1982, and was primarily interested in …