Chone Smith makes the case for the Angels signing Adam Dunn:

The Angels have an opening at either DH, 1B, or LF, the easiest spots to hide a lumbering power hitter. Signing a bat would not even block Juan Rivera or Kendry Morales. Get a 1B, Kendry plays DH. Get a DH, Kendry plays first. If Vlad needs to DH, Kendry plays OF instead and the new slugger plays first. Get a LF, Rivera plays right and Vlad gets to DH. It's easy. Angels also have no lefty bat on the roster. Perfect opportunity to sign Dunn. What are they waiting for? Sign him now, and you don't have to give up anyone in a trade later.

The move makes sense, especially if you don't want to deal with Manny Ramirez. However, Dunn strikes out a lot, which somewhat goes against Mike Scioscia's offensive philosophy of putting the ball in play.