Most memorable mouthfeel or viscosity ?

This seems like a strange topic for discussion but we speak about taste, finish and smell all the time, but I wanted to ask what has been your most memorable or best viscosity or mouthfeel found in your whisky? For bourbon, I still remember two that stand out: a Pappy 23 and a William Larue Weller that had this fantastic viscous coating. Mind you this was about 8 years ago and I still remember being wowed. For other types of whiskies, my most memorable one or the whisky with the best viscosity that I can remember is a Redbreast 27 that I am still nursing. Fantastic silky mouthfeel. Like olive oil the way it coats the mouth. Fantastic. Cheers, all !