"I will try to express myself in some mode of life or art as freely as I can and as wholly as I can, using for my defense the only arms I allow myself to use -- silence, exile, and cunning." -- James Joyce
I.e. versus e.g.
It is really annoying when someone confuses "i.e." with "e.g." If you are unsure, just say "in other words" for the former and "for example" for the latter. It really is important. When I read such dolts (i.e. those confusing the two) I want to take drastic measures (e.g. chew a NyQuil).