I went on a brewery trip years ago to Mitchells when it was in Lancaster. After teh trip we went into teh boozing room where it was free ale
I thought " I'll start on the weak stuff and work upwards" so first pint was one of their Dark Mild. it was absolutely delicious. Chocolatey, smooth, creamy, tasty... so nice in fact that I said sod it and stayed on it all night which for someone who likes his strong ales was as big a compliment as I can give it.
another night up in yorkshire whilst camping with some mates teh local pub had Old Peculiar on and it was in tip top condition. Lets say I wasn't that sure footed on teh way home that night
Theres been a few limited duration brews I've had over teh years that were superb as well. one year at the brit when I worked there they had a lovely Xmas ale, can't remember its name but it was like a minced pie to drink. I'm also partial to a pint of Fuggles IPA although its rare to find it on draught