[PoitNarf]

Yep, if the dish and the coax lines are both grounded, and to the same grounding point, you're fine. "Grounding blocks" is the word you were looking for.

My installer didn't ground my dish either, so I grounded it myself the next weekend.

 

[PoitNarf]

I'm guessing that installers are required to follow the local codes in regards to electrical grounding. If the installer is negligent with the grounding and there is damage to your house or equipment as a result, do you have the right to sue or some other legal recourse against the installation company?