I've been trying to come up with names, and I can't think of anyone who I actively hated to see in the uniform. I do not have particularly fond memories of Kenny Rogers (though I wonder how much of that is colored by his post-A's exploits) or Rueben Sierra, but that's as far as my thinking goes. I guess one of the latter installments of Rickey Henderson or the post-homeplate-missing Eric Byrnes also were unacceptable to me, but those were largely related to on-the-field issues as opposed to personality disorders (mine or theirs). Same goes for Jim Mecir, who my wife thinks is named "Oh no!" because that's what I yelled every time he came into a ballgame from 2003 onward.

... he's just Rob Picciolo
and everywhere he goes
people wonder why he's playing
bobbles every ball
running into walls
oooh .... what they're saying ...

So here are my top candidates:

Ruben Sierra

...big gap...

Arthur Rhodes
Randy Ready
Kevin Seitzer
Buddy Groom
Ernie Young
Jimmy Haynes
Jim Spencer
Don Baylor (twice!)
Ozzie Canseco
Mike Moore
Ariel Prieto
Ben Grieve
Johnny Damon
Mike Holtz
Mike Venafro
Charles Thomas

No Giambis, with 2 to choose from? I couldn't stand Jeremy Giambi even before he didn't slide.

I can't honestly say I disliked the Giambis while they were here. I dislike them now.

Terrence Long.