This is one bad Chinese buffet and I'm surprised it hasn't gone under. I've first came to Woo's when it opened and the heavy hitters wanted to try it since it was one of the few AYCE Chinese food establishments in the core and it's close to my home. For those who are old like me, you may recall a Chinese buffet chain called Abacus who I would give a similar rating (they had several locations around the city including one in the Eaton Centre that closed back in 2002-2003?).
When Woo's first opened back in 2009, they had better quality, selection and service. Individual lobster (one per person) plus roast beef was offered. The quality was decent but 4 stars at best. I would have given this place a 1 star but it's not that bad so 2 is about right and don't say I didn't warn you. You also need to arrive early cos they start closing the buffet when the crowd dies. One of the pitfalls of a buffet house and it's a vicious cycle... fewer customers = food that sits under heat lamps which may leave you wishing you never chose this place.
I've been here a total of 5-6 times for both lunch and dinner on different celebrations for friends (never my choice and last time was in late 2010) where the quality/selection has been dropping to the point that Manchu Wok has better bang for the buck and I never eat there being Chinese with the authentic stuff not that far away. I'm assuming they cater to younger people (who haven't developed taste buds), tourists and desperate movie goers. If you're stuck with a bunch of starving heavyweights who don't care about quality and selection, then this might do the trick otherwise go to the Mandarin or get real Chinese food in Chinatown.