There's a great pub at the end of the cable car turnaround in San Francisco (the name escapes me at the moment), that claims to be the "home" of Irish coffee. It's a fun experience to watch them in action, as they make like 20 at a time. Line up the glasses on the bar so that the rims are touching each other, move down the line dropping in the sugar cubes, continuous pour of Irish whiskey (they don't stop between glasses, just start at one end and start pouring, moving down the line), followed by pouring the coffee the same way, finished off with the whipped cream on top. On a busy evening, they can't make them fast enough.