Russian Kettlebells (Score 1)

Take a look at Russian Kettlebells. They are very compact, and can easily be taken to work. They are great for cardiovascular conditioning and strength. They will kick your ass. Check out this web page for more information: http://www.dragondoor.com/kettlebells/ . They also have a fantastic discussion site that the author, Pavel Tsatsouline often contributes to: http://www.dragondoor.com/cgi-bin/tpost.pl . There is also a lot of discussion at the site about body weight exercises, which are also great for the workplace. Take a look, this isn't hype, it works.