Dang! I missed that episode! But yes, a GREAT show... Nice to know that myth was busted (at least with goldfish). 
Kissofthegorami said:Food. The only thing that stimulates fish is food. Feed a varied diet and supplement with live foods now and then = happy fish. Adequate space to swim helps too. Placing a betta next to another male will just stress it out for a few weeks until it gets used to seeing a mortal rival 1/4" away for eternity. A betta taken out of his bowl, put into a 10 gallon and given live foods would be a very happy betta.
Kissofthegorami said:We are not talking about a dog or cat or our pet monkeys... fish.... Fish don't watch TV or write novels. Fish swim eat and mate. ... But fish, so far as we know are not exactly the wizkids of the animal world. The lack the intelligence to realy get bored.