Chad Johnson HOF class of ???

[*ochocincos*]

Chad belongs in the Bengals HOF if/when one ever happens.
Regarding to the NFL HOF...that's tough. If T.O. didn't get into the HOF his first go-around, Chad definitely won't.

So let's say it's year 2+...I still don't think he will.
As others have mentioned, he never won a ring. He had his antics on the field. While many people (including myself) think it brought entertainment to the game, HOF has scrooges who vote and they don't like antics like that.
Chad also only ranks 33rd on the all-time receiving yards list (11,059) and tied for 45th on the all-time receiving TDs list (67).
There are plenty of other players (even current) who exceed Chad in both of these categories and have not (yet) gotten into the HOF.

If he ever does get in, it will be a long while. But I won't hold my breath since it's becoming even more of a passing league and plenty of lesser receivers will exceed Chad's numbers.