my wife bought me kinect sports the other day, and we spent about 2 hours playing it tonight after the kids went to bed...it was alot of fun. i havent got to play ever mode on it yet, but here is what i see so far:
most of the events are alot of fun and the motion tracking works much better than i ever anticipated. so far, soccer is the only event that i didn't really care for. i had trouble with it not accurately tracking the direction of my kicks several times, and the game itself is just not that much fun. (however the target kicking soccer minigame is a ton of fun)
the track and field events are pretty fun, and exhausting...especially the hurdles. my wife and I enjoyed bowling and volleyball the best. i went through and played the main game mode the other day to try the events, tonight we spent a good bit of time trying out the minigames, most of which were alot of fun. it is alot like playing the wii, but just way cooler.
as for space issues, i don't really have any. in fact it is frequently telling me to move closer...apparently i just naturally want to stand back too far. I can't imagine this technology ever replacing a gamepad, and i dont think that is the intention. I certainly dont want to give up a controller for the majority of my games, however this makes casual/party gaming alot of fun. i can see this being a big hit at holliday parties this year. the only real downside i see to it is that you need to have the other people move out of the sensor area when you are playing, which could be a little awkward during a party. overall, i am very impressed with the way this works, and i am very happy to have one. it isn't going to replace all of my other gaming setups, but it is another cool thing to add to my collection.
for any of you who are bashing this thing, go play it. I was very skeptical at first, but after i played it....i am nothing but impressed. best of all, it is a way for my wife and I to spend some time together doing something different. usually if i am playing games, she is in the other room watching some stupid crap on tv, but with kinect (just like the wii) she asks me if I want to play, instead of me twisting her arm to do so. which is cool