I started up Mass Effect (the first one) again, with the intent of actually finishing it this time, and possibly moving on to ME2. The Mako physics are still ridiculous; a goddamned infantry fighting vehicle that handles like a plastic RC car? Get fucking real. Please tell me that gets better in the sequel.
Another frustration is Shepard's blinkered insistence on pistol-whipping (rifle-whipping, shotgun-whipping, whatever) every foe who gets within range, despite the fact that she'd do more damage by just feeding them a point-blank lead sandwich. This is particularly maddening against the krogan on Virmire, who run forward faster than I can backpedal and so are always too close to shoot.