Originally Posted by El Pollo

The good thing about the tags in GTA:SA is that it's very easy to see which ones you've already tagged. But in Vice City and 3, when you missed 1 hidden package and had to retrace your steps, you were never quite sure if you were in the wrong place for the package or if you'd already gotten the package.
As for frustrating, I don't know of anybody who ever beat Battletoads on the NES. Even with an emulator and constant save states I couldn't beat the damn speed bike part.