I disagree.

The only reason to do the $1.00 thing is to avoid an argument by the excluded heir that the testator forgot about him/her.  That can be accomplished just as easily by mentioning the excluded heir and a statement along the lines of:  "I am intentionally making no provision for any bequest to [name of excluded heir]."  Frankly, even that is unnecessary unless there is some state with an oddball law on the subject.

On the other hand, giving an excluded heir some amount of money (even if it's nominal) bestows upon that person a whole lot of rights that he/she might not otherwise have, including the right to receive and object to accountings.