I don't do it that often these days, but still I occasionally slip....and I just got some odd looks when I announced "I'm going downstairs to Xerox this [document]". Once upon a time the name Xerox was synonymous with the word photocopy but that has changed over the years as other competitors have come to the fore.
I'll bet most of you use Kleenex and Scotch tape...or do you actually say "I need some facial tissues" or "pass me that clear cellophane adhesive tape"
Any other brand names you use that are synonymous with products or services?
Now if you'll excuse me I need to search the internet for information and have to Ask Jeeves the history of the Xerox Company....