I played ME when it was on the last Steam sale and I thought that it was a good game that was incredibly lacking. It had very fun movement, awesome graphics (minus the occasional super low res textures here and there) and cool animations and other fun things.
Then it also had rather simplistic levels (the red routes seemed to be the only good choices at most parts NOTE: I didn't play until halfway though), very crappy cutscenes (you like the awesome graphics in the main game? have some crappy flash animations instead), the fighting is kinda bad/random and when the platforming didn't work, it just... didn't.
It's a nice experience that could have been much much better.