I think the portrayal of any group, be it black, oriental, the mentally ill or gay, can be done in way that would be considered inappropriate, but it can also be done in ways that are humorous, without being demeaning. I think this relys not only on how the character is presented, but also on how it is received and interpreted. As with beauty, it can sometimes be in the eye of the beholder and if you're looking to find fault, then I'm sure you can, but we all should be able to laugh at ourselves (our our subgroup) as well.