Barrowman said that he particularly enjoys the 11th Doctor because he is so different from his predecessors.
He told Female First: "I think he is very good. He does what he is supposed to do and he has put his stamp on the tin.
"He is very different from David Tennant and Christopher Eccleston and that is the whole point. Each Doctor should be different and make their own mark and he has done just that."
Barrowman reiterated his desire to return to Doctor Who for an adventure with Smith's Doctor, but cautioned that he has not been approached to appear in the series.
"Captain Jack to meet Matt Smith's Doctor? I have no idea - all the fans seem to want it and they have all thought it would be a good boost in things for the show," he said. "I have heard nothing from BBC drama and no-one seems to be talking about it so I don't know if it will happen."
Barrowman also suggested that Catherine Tate should be the next Doctor on Doctor Who.
Doctor Who continues with new episode 'The God Complex' on Saturday on BBC One in the UK and BBC America in the US.
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Watch Doctor Who star Arthur Darvill's recent interview with Digital Spy below: