Yes it has, I still love playing it. The control scheme works well, using the joystick to move and the c buttons to strafe. The R aiming seems extremely accurate, and the game has a built in auto-aim, especially on lower difficulty levels to compensate. Perfect Dark also still plays extremely well in multiplayer. I still dust off the N64 for some GoldenEye and Perfect Dark when my brother visits, and it's a hoot. The graphics aren't great, but the gameplay is fun. When we finally get to the point where we need to decide the match, it's always pistols in the archives with license to kill. It's nostalgic, but at the end of the night after a match, one of us says "pistols in the archives". I found the controls in the updated Perfect Dark on 360 don't work nearly as well, the dual analog is alright, but the precise aiming is off. The joysticks are too sensitive, so I end up having my crosshair go all over. I still like the N64 setup though, I think it actually worked quite well, but the games required fewer buttons. You didn't have to have a set button for crouching, or throwing grenades. Turok did freelook well, the joystick moved your view, the c buttons moved the character, and you had A and B for selecting weapons, z for firing, r for jumping, and l for the map. The N64 didn't age badly, neither did the SNES or the NES, people just aren't accustomed to them anymore.
Edit: I still don't understand why people hate people playing as Oddjob. I've always found that in multiplayer the autoaim will automatically aim at the center mass. On Oddjob, the center mass happens to be his head since the game doesn't really seem to differentiate based on height, so it's always been easier to kill him. I prefer Trevelyan, his dark grey clothing tends to blend in when you're in a dark area.
I've never got into the downloadable title thing (I feel like an old man whenever I talk about games) and never hooked my 360 (now broken as of long ago, fucking Microsoft) up to live, there's a heap of games I would get if it was, Perfect Dark would be the first purchase I'd make (followed by Monkey Island Remake, Joust, Mortal Kombat games, Castlevania just to name a few).