Usually its when I'm listening on my personal music player and walking or cylcing around where things get a bit...funny, and I suddenly think, "wait a minute...wheres this place?". Hehe, okay, it isn't that bad, but yeah!
As for listening when on the computer, I do find it hard to do work usually, yes, but don't really figure it out unless I'm doing work in Uni (College at the time) and notice time slipping past more.
Did you know, I want them speakers?
Did you know you are going to hand them to me and I'm going to give you my Creative 2.1 set?