Try Molokai Fish & Dive, and be sure to report back!
As to intermediate dive sites on Molokai, try these:
Fish Bowl
Dive Site: Fish Bowl
Depth: 40-60 feet
Location: East Coast
Visibility: 40-100 feet
Level: Intermediate - Advanced
Sealife: Octopus, Eagle Rays, Reef Sharks and Colorful Reef Fish
When the boat arrives at this dive site they will drop anchor and then take you your adventure. As you cruise away from the boat you will begin to see the marine life pick up. If you cruise the bowl back towards Maui and look out over the edge you will find huge boulders that are covered with coral, fish and octopus. There are ledges to be found at about 55 feet where a white tip reef shark is often spotted. After this you can catch a slight ride on the current around the corner and back into the fish bowl, keep your eyes out into the sand for cruising bruisers (Hammerheads!) and eagle rays. You just never know when they are going to show up.
source: Hawaii Scuba Diving.com