Necessary Evil

I hate it when I have to work so hard, with such strict deadlines and my PM literally sitting over my head asking for updates every hour on an issue. I hate it even more when there is no work around for me to do. I just asked my friend how she managed to work for all these years and doesn't she ever get bored. Her reply was very simple yet left me wondering " If we don't do this, then also it will be boring". Work - a necessary evil. Most people do not want to work but become so miserable when they actually do not have any work.
I am fine when I do not have any work to do at home - I can watch movies, songs, talk for hours on the phone, read a book or simply just sleep. But what do you do in office when you don't have work ? When you share a cube with four other people, you cant even watch movies, songs , read a book (although I have read two e-books in office so far), or talk for hours on the phone. You can sleep for a little while (which I sometimes do and one of my colleagues even snores while sleeping ). But, then what ? Even gmail/yahoo is blocked in office, so I cant even chat !! I do sometimes blog ( Most of my blogs below were written in office !). But you cant get a new topic to blog about every time you are feeling bored in office.
I try to get involved in the conversation that my colleagues have. But since all others are guys (on top of being american) , half of the times I don't get what they are talking, when I do get what they are saying, I don't feel like talking about it. Also, talking happens very rarely in our cube.
Then, sometimes I try to 'Google' something totally weird or random. The other day I was reading something online and found out from where I get my short-temper. I am a descendant of Vishwamitra (Kaushika goutra). He was very very short-tempered and hence people of kaushika goutra are known to have short-temper (it also said they have good mathematical skills).
I do try to also read some technical docs, trying to update/refresh myself. But I consider it more as a part of work.
Thats about all that I do when I have some breathing time in office. So, what do you do when you are bored in office? Suggestions/experiences to share are more than welcome.