Chris Palmer is an interesting case...he gets extra bonus points for not even being a competent OC, but on the other hand he actually had the right idea in the 2000 draft.
Specifically, he wanted Tomlinson, but the rest of the organization overrode him and felt they needed defense. Thus, Courtney Brown. =/
As a Browns homer, however, I think Butch Davis was easily worse than Palmer, and actually a legitimate candidate for top 3 on this list. Consistently overvalued his own talent, for one - he hyped up some of our O-linemen like they were Pro Bowlers, and truly thought Jeff Garcia would get us to the playoffs a couple years ago. He was also guilty of the same college homerism as Spurrier, bringing in duds from The U (James Jackson and Andre King, anyone?). Then there was his belief that he could "coach up" anybody, leading us to draft a bunch of shaky character guys who never worked out.
Most notably, he had total control of every Browns draft during those years. I already mentioned the character issues, but he gave us a few other winners to boot:
1. In 2001, his scouting department targeted Richard Seymour, and he agreed with them. Then, on draft day, he took Gerard Warren literally out of nowhere, going against the entire rest of the organization. Another example of the Miami connection here, by the way.
2. The next year, in the first round, he had a shot at Clinton Portis and passed because he coached him at Miami and didn't like his character. So instead, we get William Green, who at the time had already been suspended for a bowl game after getting caught with weed.
3. Best one of all...he remains the only man ever to get completely owned by Matt Millen in a deal. The case in question was in 2004, when ol' Butch traded up one spot in the draft for Kellen Winslow. He was legitimately afraid the Lions wanted him, when in reality Roy Williams was their man all along.
Next up is a front-office struggle: In early 2004 (I believe), we hired Ron Wolf, who was the Packers GM during their Super Bowl days in the late 90s. Butch didn't want to give up any of his power, and somehow had enough people on his side to get Wolf fired after only a few days.
And one final deed: He put the team into "win now" mode in 2004 because, as I mentioned earlier, he signed Jeff Garcia and thought that would make us playoff-bound. He seemed to be the only person unaware that we didn't have enough talent to pull it off, and this decision (combined with his previous draft record) left the organization in such rough shape that we are still rebuilding to this day. Then of course, when things didn't work out, he quit the team late in the season.
Hopefully I have made a strong enough case for Butch's inclusion on the list, and made you all understand why he should never get another chance in the NFL.
-Josh