Season 3 was AMAZING. Please, it was unbelievably funny. It got a bit crazy, but there were some unbelievable episodes (Remedial Chaos Theory being the best). The horror episode was awesome, I can't stop laughing at Pierce's horror story. The blanket fort episode was beautiful as well. There was so much creative stuff in season 3. The dreamatorium episode, the whole air conditioning repair thing, and the Digital Estate Planning episode, all further proof of the balls this show had.
It was creative, it tried crazy things. These things were awesome. But I guess some people just want the same old stuff again and again (explains why big bang theory is so popular.)