I think, if the display is intact and the fans aren't screeching, you're probably good to go. I suppose testing the I/O ports would make some sense. It's conceivable something got unplugged. Test WiFi too, that board is on a connector and has three antenna cables plugged into it.
Will this anecdote cheer you up... or depress you further?
I had had my second iPad 2 for two days. The first one had been stolen out of my briefcase in a conference room earlier in the week. I was at my niece's house and was sitting on the couch reading the Journal on my iPad. The new iPad was in an "extra" case that I'd replaced on the stolen iPad. The case fit too loosely for my taste.
So the doorbell rings, the dogs bark and, being the attentive uncle that I am, I spring up to get the door. Somehow the new iPad launched out of the too-loose case and did four slow-motion somersaults as it arced up near the ceiling on it's way to land on it's edge on my niece's new slate foyer floor.
All of which was too much for the display to handle. The good news is that most of the glass pieces actually stayed attached. And a little piece of it was still lit up. To this day the physics of the event puzzle me.
Off to the Apple store AGAIN the next day to buy my THIRD iPad 2.
All of which is to say that, while it sucks that you dented your new Mac, it could have been worse.
It does suck though man.