We have to fill in a stupid Excel timesheet every month to document our activity, which is then printed to paper and sent to the management.

Boy, I do not even have Excel installed... Instead, I have a nice Perl script that generates random activity for me saving me countless hours of doing silly paperwork. I once set it up to give me a healthy balance of research work and coding, and lately I have grown to copy-paste the generated random report into Excel (on a colleague's Windows box) unchanged, without proofreading it any further.

Curiously, the script used to have a strange error, which caused it to produce fake reports every now and then, but I have never been contacted on this issue. Apparently, they just throw the timesheets away...