I've seen two hilarious JD/Evan Williams taste tests done by guys I worked with. One was 5 guys-blind taste test-3 picked Evan Williams, one guy wouldn't pick out of frustration, the other guy just said he couldn't tell the difference and would buy EW from then on. All were sworn to JD to the point of actually being kind of nasty about it. One still was after not picking.
The funniest one was a guy I used to play cards with. We used to leave bottles at a friend's where we played and bring a new bottle when we needed one. His bottle was about 3/4 full and one of the players who had been nagged about his choice of EW got the host to substitute EW for the guy's 3/4 full bottle of Jack (saving the Jack in a carafe in case he actually went off about it). He showed up and had his bottle (of EW, not JD) w/rocks almost gone while ribbing the guy about "cheap whiskey" the whole time. Even offered the EW drinker a drink so he would know the difference! The EW drinker said, "Good stuff." After being told what he was drinking all evening he tried denial at first, but knowing us all so well...he finally gave up and laughed about it. Another guy there at the time made him up a JD Black sticker later on so he could attach it to his EW bottles to keep his status drink.