For what it's worth, here is the Rotoworld assessment:
Reds signed first baseman Scott Hatteberg, who had been with the Athletics, to a one-year, $750,000 contract.
Not very impressed with this, especially since it's a major league deal and Cincinnati already had a full 40-man roster. Hatteberg isn't even of a lot of use as a defensive replacement. He could be a fine pinch-hitter, but the Reds already have one of those in Jacob Cruz, and unlike Cruz, Hatteberg isn't an option in the outfield. He's not someone who should be guaranteed a job at this point of his career. Feb. 12 - 1:48 pm et
I tend to view this move in a more positive light. The 40 man roster isn't exactly chock-full of All-Stars, especially on the fringes where the corresponding move will occur (Ahem, Mr. Womack?). Hatteberg may not be able to play in the outfield, but he can back up at 1B, PH, and serve as the emergency catcher if Narron decides to use Valentin to pinch hit. He can still get on base at a decent clip and can generate a SF, if needed (4th in the AL in that category in 2004). I'd rather he signed a minor league deal, as well, but I don't mind a $750K major league deal either if the guy is going to be used in a backup role.