I've been using Money for around 8 years and at different times have tried to do many different things with it.
One previous poster though about tracking money they pulled out at the ATM - I have even done that. I used to carry around a little notebook and write in it when I spent cash. I've been really happy with it (probably when my finances were much simpleter) and really unhappy with it - at one point I started moving to excel and wrote a spreadsheet that implements the account register, and which my wife now uses for the household account.
I now use it for reconcilations, a balance sheet, monitoring regular outgoings (bills screen), monitoring investments, and a high level view of spending.
To achieve the last point I deleted all the built in expense categories and now only use about five or six. These include budget essentials (sub categories will be things like house payments, electricity bill), budget optionals (e.g. gym membership, magazine subscription), spending (more on this below) and a few special categories like loans and tax. Everything that isn't a regular outgoing is in spending, again in a reasonably small number of categories (e.g. essentials, house/diy, computer, baby, wife, and misc). Almost everything that I do with cash or credit card goes into misc spending. Essential spending is things like car repairs and dentist bills, new carpet goes into house/diy, etc. About 90% of my transactions (by number, not by amount) are in misc.
Having a small number of categories makes the reports much simpler, and having a small number of sub-categories under the only real variable (spending) makes monitoring spending pretty simple. Misc spending contains a huge range of stuff but what I really care about is that my monthly budget for misc is $1000 and I spent $1100. I don't care whether the extra $100 was a cash withdrawal, dinner out, or a new
I find the automated share pricing quite useful and also use money to hold details of shares and funds.
I completely ignore the budget which just sucks. The budget creation process is semi-useful, as it will work out from your income and bills how much you have left over at the end of each month, however tracking expenditure against budget is a disaster, just use excel (again something that became much simpler with my category reorganization).
I also found the cashflow projections to be useless - I had a relatively simple cashflow pattern I wanted to layer on to the budget cashflows and it couldn't handle it. Again, I use excel.
Having a PDA version is quite useful, as I try to enter receipts same day (in GTD inbox fashion). You can use ultrasoft money on Palm or pocket money on PPC.
As another poster mentioned - if you find these functions valuable then you will find money valuable.
Regards,
Tony