This is my theory...
Just don't wind anyone up, be interesting - but not a character. Don't talk about the other housemates behind their backs, and be a little fake just to get on with everyone. When all of the housemates people dislike have gone, step it up a gear and start to be more lively and interesting.
If someone confronts you, have a conversation with them about it and try to resolve it. Don't block the person out, and don't try to win the arguement. By being sympathetic to their views and making them look the worse of the two you've come away looking good, and people will think X HM is bad for having a go at you.
Say you watch Eastenders, listen to Radio 1 or local radio, and eat out a few times a month. When past the half way mark be a bit more personal, and try to get behind people you like - like Peter Kay, or music/bands.
Just play it cool, enjoy every minute of it and don't let anyone annoy you. Even if someone drives you insane just remember - you don't have to see them ever again once you're out of the house.
People on this forum find HMs boring towards the end, complain about them bitching, or say they're really annoying and should go. Just play it cool and avoid being marked as all three.
Well - that's my theory.