OBDII has its pros and cons.
The only Pro I can think of is that it does help locate problems.
The cons are just a pain in the ***.
Anyways several standalones allow you to hook up special display kits that let you do all that crap.
Since Megasquirt is becoming huge in the CA realm I'll show what we use for displays.
This is called DigiDash
This gives us gauges for your hearts desire and a GUI interface. Kinda like SDS LCD programmer but with pictures and bigger display.
http://www.youtube.com/watch?v=XOyMSY5KL0Q
We also have whats called MegaView.
This is the equivalent to the SDS programmer just numbers displayed.