In terms of people who actually have a talent assigned to them, that's a tad hard. I respect some people for their ability to keep working even if they're not as gifted.
Jessica Simpson- That goes for singing, acting, anything. She was one of the infamous late 90s Britney clones but probably is still more known for not knowing that her tuna was tuna. I know some people say she can sing, but she wails so badly and some of her songs have no appeal. I would include her sister, but I think that's a given.
I'm drawing a blank, but I"m sure it'll hit me later. Great question!