I'm a die-hard Trekkie from childhood, so I had some reservations about changes to 'canon'. I can tell you some moments made me go 'wait, that's not...' and then I realized: I just didn't care. The acting is top-notch: enough similarity to the original characters that they're recognizable, but without mimicry or parody. The script is smart and fast and fun. The effects are incredible. I'll see this again in the theater, and buy it when it's available - it's *that good*.