The gyro is indeed delicious and huge. I got the regular and I felt it was already stuffed with meat so I think the jumbo would have been WAY too much meat for me, considering they use the same pita size. I think the star of the dish is the sauce, which I think they mix in a hot sauce (siracha?).
Everything else about this place is a 3 star at best. Starting with the service, which is a bit aloof and arrogant with their list of "rules." It's crazy slow (why have only 1 person rolling the gyros??) which causes long lines that move like molasses. Maybe it's intentional so people can see how popular this place is. The falafel nearby, I swear, has as many customers and the wait is MUCH faster.
Just because it has been featured on a couple of TV shows doesn't mean service should be crap. Yeah, the gyro is pretty good but I don't want to go through that line again when I can have amazing falafels so close by.