A few months ago I started tracking my monthly networth using NetworkIQ. I had put in a rough approximation of my networth as of 12/2004 and then the last three months or so were pretty accurate according to Quicken (well, my version of my Quicken records..we disagree slightly).
I just spent some time backfilling my history back to August of last year. I know this is beta software, and I do think they have a nifty idea, but their interface blows for filling in historical data. I won't pick on them here, because I bet they are pretty neato folks.
Because I just can't bear to add the badge to my template for reasons of style (let's face it...those greens do not match, Honey!) and some illusion of discretion, you can see the results here.