I'v been really slack on AA's durring TSO, I got enough to get the stuff I really needed, then stopped worrying too much about it, but here's my two specs:
Healing:

Planning to use the last 17 to max out the str line for a little extra dps on trash ect while in healing spec.

Last for 4 aa would probly go into maxing the tree just for the heck of it.

Almost the same as Larry, except I took the combat one for a little extra dps on trash ect.
DPS:

Maxed out melee and spell stuff with a little bit of extra healing.

The last 10 aa's would go to get the renewal line.

Here's where I'v sacrificed the most with the current spec, the rest of the aa's would go towards geting more of the healing stuff.
Anyways, looking at Larry's spec I think going more hybrid would be the way to go as with a max dps spec like this you end up not using it too often. But its great for those few times where you really want to mow down things, and especially for soloing.