A recent feature in the LA Times Calendar section notes the "diversity" of the cast on ABC's Lost. This is the kind of bean-counting I find annoying. What matters is whether or not a show is good, regardless of the ethnicity of the actors.
No matter how diverse anyone thinks the casting is, let's not forget it's still Hollywood diversity. In other words, the four lead females range from very cute to stunning. (Half the men could be models as well.)