3rd Party Apps - Must haves

[John Lessnau]

What 3rd party apps do you consider as must haves? I was about to rebuy IM+ for instant messaging that I used on my Treo Palm 700p then realized that this phone comes with a rather nice instant message program that works with AIM, Yahoo, and MSN instant message programs which are the 3 I use for business so I am all set.

I am considering SPB Mobile Shell 2.1.2 since it is Handigos #1 app but I am not sure if I should change the look and feel of the out of the box version before I am even familiar with what it is like.

Maybe this phone is too new and I should wait for more apps to be developed.

Suggestions?