I'm a fan... for several reasons.
You can find practically everything/anything you need for your house here.. my favorite is the kitchen stuff, the organizing options, and the basic shelves/bookcases. Things are very affordable and stylish... not saying that it'll last you forever, but I think what they're going for is to be affordable and stylish.
The store itself is a PITA to go to.. it's a freaking maze (but if you're a bit sharp, you learn the trick and you can navigate it quickly and without touring the whole damn place).. the parking lot is *always* packed (good luck finding a close spot) and those damn carts are a total annoyance (they glide in every direction, except straight).
The staff has always been good - nothing awesome and nothing terrible.
You want a cheap meal? go upstairs... even their longest line moves quickly.. and they have good healthier options (smoked salmon, nice green salad).
As far as assembling their products.. well, I have done shelves, cabinets, tables, etc and can't think of any one time uttering "g*%#@&!^ Ikea!!" while assembling things.. so I guess that's good.