I have to buck the trend here and say I found Something Rotten shockingly unfunny. Except for a few moments that seemed liked Borle had improvised at some point, there wasn't a lot of funny. I was shocked at how lame the "Musical" number was. THIS was getting mid show standing ovations??
I agree with those who found Avenue Q a bundle of laughs, and would add the Off Broadway production of Bat Boy to the list -- very funny performances, material and choreography. Oh, and the OB production of Disaster! at St. Luke's was non-stop hilarity....which only made the unfunny Broadway version all the more frustrating!