Each time I have a Zakkushi reservation coming up, I think of nothing else for the rest of the week.
The yakitori is delicious. The yelling is fun. The Sapporo Beer Blasts are great. The black sesame ice cream is truly amazeballs.
The only time there was ever any confusion (i.e. an order that didn't arrive) involved a confused-looking waitress, but she seemed to be a trainee. Best to clarify if your order goes rogue for an extended period of time.
But everyone there (including the dreaded Clipboard Time Management Guy, who oversees the 2-hour time limit) is really friendly and accomodating.
Zukkushi is the bomb.