From a reviewer at Amazon:
HeadCrash by Bruce Bethke is a cyber-satire with a great mix of action, plot and humor. Jack Burroughs, the protagonist, is a computer nerd who works for an exceptionally large corporation by day, and by night on the Internet as the too-cool Max_Kool. But, when Jack is fired, he takes up a job as a free-lance cyber-mercenary. The action and hilarity ensues from there including hand-to-hand combat with seven-foot virtual Vikings, Nazis, and cross-dressing mob girls.
Bethke's writing style is so entertaining and fluid that you don't ever want to put down the book. This book is like a cyberpunk version of the movie OfficeSpace, but unlike most other cyberpunk books, HeadCrash does not take itself seriously in the least. This comes as a refreshing change to anyone who has read many cyberpunk novels, but despite that, I would recommend this book to anyone (with the exception to young children, if you get my drift).