Thanks Ghostman, it would be cool to see a few of these get built.
Atom, if you don't mind some suggestions on the PCB;
1. many people will prefer through-hole to SMD pics, easier to solder, they might already have PIC, they can replace easier if it blows up etc etc
2. actually I'd probably go through hole on all the parts, there are not many
3. I would make the button totally external to the PCB, it saves space and button can be placed neat on front panel
4. I think people might want the calibration trimpot, an easy way is to put 500 ohm trimpot in series with the middle 1k5 resistor and make it 1k2 (see my post#1)
5. the 2 wires to the probes should go right across the internal cap, wiring short if possible
6. a ground plane would be nice on the PCB, as it is so sensitive a ground plane will help. My unit does not have a good ground plane and the reading can change by 0.10pF when I put a couple fingers on top of the meter (near the LCD). That's not a big problem as it can be rezeroed anytime, just a ground plane will improve it and has no cost really.
7. You should be able to make the PCB pretty small, it can piggyback on the rear of the LCD (as button is on front panel).
Check out my Shift1-LCD board below, it is a small piggyback board that goes on the rear of the LCD;
**broken link removed**
(Just remember to reverse the 16 LCD pins)