Believe it or not, among the sushi places I've gone to in Paris, Tokyo, Seoul, Miami, LA and San Francisco, this random little place in nowheresville Ohio was really quite good! They had very progressive sushi dishes, even back in 2002, when sushi was just becoming ubiquitous.
This is a very fun place with the right vibe to it. Cleveland is not recognized enough for all of its charm (Rock and Roll museum, Cleveland Browns), but restaurants like Sushi Rock help make Cleveland more memorable.
I really recommend this place - it's like Cleveland's own version of a very good Sushi Samba.