give it to. reporter: her new future president would have reality show on his resume. you re all fired. all four are fired. reporter: even if firing turned out not to be his forte in real life. sure, there were reality flops. are you hot wasn t. pectoral muscles, baby. i m the hottest man because i have this to offer. reporter: and greatest american dog didn t do so great, even if presley stood up to an elephant. good boy. stay. presley, stay. reporter: in actual reality, pounds don t stay off. i m giving you my vest. reporter: and couples don t stay together. karen, i thought you d never ask. reporter: when it comes to reality tv, we tend to behave like a good dog. sit, sit, sit. reporter: jeanne moos, cnn, new york. okay, that looks great. don t miss the cnn new original series 2000s starting tomorrow night at 9:00 eastern and
katie. reporter: oops. i forgot her name. reporter: who knew a future president would have realty show on his resume. you re all fired, all four are fired. reporter: even if firing turned out not to be his forte in real life. sure, there were reality flops, are you hot wasn t. i m the hottest man because i have this to offer. reporter: greatest american dog didn t do so great, even if presley stood up to an elephant. good boy. stay. reporter: in actual reality, pounds don t stay off. i m giving you my best. no, you re not! reporter: and couples don t stay together. karen i thought you d never ask. reporter: when it comes to reality tv, we tend to behave like a good dog. jeanne moos, cnn, new york. there s so much spray tanning in reality tv in the 2000s.