I like Spencer too. I know he's lazy, sleeps till lunchtime and hardly ever has a shower, but he is being himself. He doesn't bitch and I think if BB ever gets round to giving them something physical (what are the producers playing at?) he'll come into his own.
I think he would make a good leader in a task, if there is ever any sort of team to lead that is, and not just a group of not-very-pleasant individuals.