Current TV's co-founders, including former Vice President Al Gore, announced Friday that the network has ousted its highest-profile on-air personality, Keith Olbermann. "Current was also founded on the values of respect, openness, collegiality, and loyalty to our viewers," Gore and Joel Hyatt wrote in an "open letter" to viewers on Current's website. "Unfortunately these values are no longer reflected in our relationship with Keith Olbermann and we have ended it."