I don't think anybody saw this coming. At least Mel Gibson has a history of drinking, but the only thing Haley Joel Osment is known for is looking cute and hitting puberty. If convicted he faces up to six months in county jail, but considering it's Haley Joel Osment the judge will probably just ask him to say "I see dead people" and then let him go for being a national treasure.
NOTE: Speaking of which, Mel Gibson pleaded no contest to his DUI charges today and faces no jail time but has to attend Alcoholics Anonymous meetings. Which should be good, because nobody is more anonymous than Mel Gibson. Except maybe Mr. T. Or the Kool-Aid man.