I had really high hopes for Mellow Mushroom, and I was a little disappointed.
Service was okay - definitely not super crappy like others have mentioned. I went for a late-afternoon lunch (about 3PM on a Monday) and the place was pretty dead. That probably had something to do with it.
I got a bowl of their mushroom soup ($3.99) that was surprisingly good! I was expecting something a little thinner since the menu mentioned a wine base, but it was very thick. Still tasty.
I also ordered the Philosopher's Pie pizza. Pretty disappointed in that one. The steak tasted a little funky. Overall, it just wasn't quite what I had hoped for. The crust was very good - quite possibly the best part.
All in all, gourmet prices for pizza that doesn't measure up. The soup was tasty, and I might be back for happy hour. But I wouldn't go out of my way for this place.