Series 1 of Nu-Doctor Who and Children of Earth are the only times he's been used well. It doesn't help that John Barrowman is one of the most obnoxious people on television.
Did he steal your boyfriend or something? I've enjoyed his performances and appearances on TV be it fictional or real.
The boring one, the one with Khan, the one where Spock returns, the one with whales, the dumb one, the last one, the one with Kirk, the one with the Borg, the stupid one, the bad one, the new one, the other one with Khan.