Somewhat decent, at best. Every episode is some diseased patient comes in, doctors try and diagnose it but aren't sure what it is, House argues with the rest of the team blatantly, rest of the team disagrees, House ends up being right, patient is cured.
House's character isn't that believable either, especially due to the dialogue. Just his being such an ass, always being right, and having something witty to say (but it doesn't seem like natural wit - it seems like he's saying memorized lines from a script) just doesn't fit together for Hugh Laurie I don't think.
Best doctor show on television is ER. Hands down.