It's long since passed "his career is over." He's entered what I like to call "The Lewinski Zone."
Monica Lewinski will forever live the rest of her life as the chick who blew Clinton and had a cigar shoved in her crotch. Ten years from now, if she finds some guy who likes her, he knows at some point he'll have to take her home to mom and dad and there will be this long, awkward silence where everybody is thinking about her strangely used vagina and how much semen was on that red dress.
If I see Mel Gibson in a restaurant ten years from now, I'll probably try to get a signature, and in the middle of it ask him, "What's it like to punch out a woman's teeth while she's holding your own baby?" (Hopefully he gets pissed off and takes a swing, because I think I'd enjoy that fight.) I got a feeling I'm not the only one who feels this way.
Gibson has sunk to a public relations low you just don't recover from. Ever.