Any App for recording a call that works on these phones?

[MakeMoves]

I'm trying to find an app that will record phone calls. This was a very usefull feature I had on an old palm phone that came in handy when you are driving and cannot write down info that someone gives you on the phone.

I tried a couple that I found on the marketplace but none of them worked on my phone (Sprint Epic).

Has anyone run across something like this that works on the Galaxy S series?
What's your favorite one?

PS - If none of them work does anyone know of a good voice memo app that i can activate while on a phone call?

Preferably something that can have a button short cut or a very easy way to quickly start recording while driving.