I've discovered (perhaps too late in life) that drinking a good whisky (or at least one that you particularly like) can give you a feeling of intense pleasure; a moment when your whole consciousness is directed towards the flavours and and aromas (and perhaps other physiological/psychological effects) that you are experiencing. I wouldn't call it orgasmic: I think a better word to describe it would be a "swoon".
Other experiences I'd compare it to:
Food: I rememeber having a particularly good pizza a few years ago (a "gourmet" pizza with fresh ingredients), which had me moaning with pleasure on each mouthful (I don't think my folks appreciated this because they didn't think theirs was very good).
Music: For me, especially with the works of Bach and Montiverdi, a particuar chord or note is struck. It's not the chord or note itself (in isolation they'd be rather boring), but the progression that leads up to it, culmiating in the chord or note...and that's when the pleasure hits. Sometimes I want to sing along (even if it's instrumental)...but all that comes out of my mouth is a screech.
Lust: For want of a better word; sometimes just the sight of a beautiful woman can make me swoon. Of course it's sexual, but just as obviously it's not orgasmic: it's a swoon.
No other alcoholic (or non-alcoholic) berverage has had this effect on me. It almost makes single malt scotch whisky worth the price.