I am a Bach fan as well. Picking out even one piece as favourite is impossible. I have paged through "simple" Bach chorales looking at the four parts and realizing that every part has its own melody and that the four parts together are much more again. I know nothing about counterpoint, but I can look at the notation and wonder how it was even possible to think it and compose it in the first place. He wrote at a furious pace because so much music was required of him in his work.

In the end, for me he pours out the glory of God in ways that are no longer seem possible in our age.

Being a recorder player, Brandenburg 2 & 4 are favourites to listen to. Favourite Bach recordings include Glen Gould playing the Goldberg Variations, the 1981 recording that is re-released by Sony on CD and Paul Tortelier's recording of the six solo cello suites, which is a double EMI re-release.