The Gruben is really delicious. I'm not a fan of Rye bread so I get it on a sesame roll. I've had the Greek Pita a few times and like others have said, the chicken is very dry. The "sauce" they put on the table (a greek dressing like substance) can almost make up for dryness of the chicken but not quite. I considered giving them an extra star because there's a dude named Yoder that works there who I pretend is a Zen like sandwich master from the Dagobah system who holds the secret recipe to the delicious slaw they put on the Gruben.
It's a bit of a cluster-F at the drink/napkin area...too tight in there for people but the fact that they have Diet Dr. P in the fountain makes up for it. Like Nicole T, I'm a sucker for the DDP.