When people talk of remakes from now on, they're going to probably point to Bionic Commando as a poster-child for "How It's Done."  The game is true to the original in almost every way, while adding little nudges here and there that make it worth revisiting.  Take the Bazooka for example.  In the original, it pretty much fired a big ball or something.  In BC:R, it fires an actual rocket that twists and turns in a semi-unpredictable fashion.  Despite the dramatic graphical shift, the weapon achieves the same effect as it did before.  Take that, and apply it to the overall design of the remake, and you have a game that fully respects the original.  It's also hard as balls, omg hard.  I remember beating the game ten years ago in about 2 hours no problem.  This one seems somewhat more brutal, but then again, it seems the same.  Maybe my skillz have atrophied to the point that I should be focusing on things that are easier for someone my age, like making babies or drinking lemonade on the porch in the hot humid summer afternoon.