It's a bit unusual to come across software released in 1996, but there you go - I was given a decent Windows 7 PC with working version of Microsoft Office 97 Professional.
And Office 97 decided not to give up that easily. Trying to remove via normal control panel method failed with following error:
Setup cannot find the files on 'D:\' from which you originally installed the product.
To add/remove programs or options, run the Setup program from the CD or floppy Disk 1. If you installed from a network location, run Setup from the network location that currently contains the Setup program.
After installing the tool, launch Removal Wizard from the Start Menu. Follow a simple wizard, then select and confirm removal of all Office 97 applications.
Bye bye Office 97...