Rodman - greatest modern defender and rebounder. Also likely to give the most entertaining speech, possibly with GoDaddy.com henna tattooed on his forehead or something. Should be a gimme but his character may lead to a quasi-boycott against letting him in on his first ballot.
Miller is also a gimme - never a true great but an excellent player for a long, long time. He gets in.
King is the anti-Miller because he had a tremendous, but very short, peak. I think he'll get in but maybe not this year.
Mullin is tough. Very, very good player, but never a true great and lost some big chunks of games due to injury and alcoholism. His peak was arguably worse than Miller's (#s are inflated somewhat from the GS system) and definitely a lot shorter. He is widely respected though, so he'll probably find his way in one way or another.