I've been waffling that re-play for a long time; it's a good game to replay, with so much to be done, and not being able to get all the Achievements in a single play-through. (Cue Demi in 5, 4, 3, 2...)
I think I haven't touched it in 2 years except to see how much better it looks on my 40" Bravia than on the 28" Trinitron I originally played it on. I wanted to see if the text was actually legible, but ended up being surprised at the crispness of the graphics.
The W.C. "magic mirror" shortcut only works if you rescue the security guard after defeating the clown.
...Man, that's a sentence that can only be used to describe a videogame.